1
|
Lee S, Wei ET, Selescu T, Babes A, Park J, Kim J, Chung B, Park C, Kim HO. Histamine- and pruritogen-induced itch is inhibited by a TRPM8 agonist: a randomized vehicle-controlled human trial. Br J Dermatol 2024; 190:885-894. [PMID: 38345103 DOI: 10.1093/bjd/ljae054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 11/27/2023] [Accepted: 02/05/2024] [Indexed: 04/11/2024]
Abstract
BACKGROUND Allergies often present challenges in managing itch and the effects of histamine. Cooling agents that act via transient receptor potential melastatin 8 (TRPM8) agonism have shown potential in itch management. However, animal studies on itch have limitations, as animals cannot communicate subjective events and their fur-coated skin differs from that of humans. Human studies offer more direct and reliable information. OBJECTIVES To investigate the effects of a specific TRPM8 agonist gel (cryosim-1) on itch induced by various pruritogens in human skin. METHODS Calcium imaging experiments determined the binding of cryosim-1 and histamine to their respective receptors. Thirty healthy volunteers underwent skin prick tests with pruritogens and a control vehicle. Itch and pain intensity were measured using a numerical rating scale (NRS) across 10 min. Participants were randomly assigned to pretreatments with vehicle or TRPM8 agonist gel. Tests were repeated at a later date, and skin moisture, transepidermal water loss and mechanical sensitivity were measured. RESULTS The in vitro study confirmed that histamine is not a TRPM8 agonist and cryosim-1 does not act as an agonist or antagonist on the human histamine 1 receptor. The TRPM8 agonist gel significantly reduced the itch intensity for all pruritogens compared with the vehicle-only gel. It also reduced itch NRS and the integrated itch score. Mechanical sensitivity was also reduced. CONCLUSIONS The specific TRPM8 agonist gel effectively suppressed human skin itch induced by various pruritogens. These versatile actions suggest that cooling agents may be promising treatments for multiple forms of itch stimuli.
Collapse
Affiliation(s)
- Soyeon Lee
- Department of Dermatology, Hallym University Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - Edward T Wei
- School of Public Health, University of California, Berkeley, CA, USA
| | - Tudor Selescu
- Department of Anatomy, Animal Physiology and Biophysics, Faculty of Biology, University of Bucharest, Bucharest, Romania
| | - Alexandru Babes
- Department of Anatomy, Animal Physiology and Biophysics, Faculty of Biology, University of Bucharest, Bucharest, Romania
| | - Jinseo Park
- Department of Dermatology, Hallym University Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - Jincheol Kim
- Department of Dermatology, Hallym University Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - Boyoung Chung
- Department of Dermatology, Hallym University Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - Chunwook Park
- Department of Dermatology, Hallym University Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - Hye One Kim
- Department of Dermatology, Hallym University Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| |
Collapse
|
2
|
Pavlenko D, Akiyama T. Cryosim-1: a cool solution for acute and chronic itch. Br J Dermatol 2024; 190:787. [PMID: 38593191 DOI: 10.1093/bjd/ljae102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Accepted: 03/07/2024] [Indexed: 04/11/2024]
Affiliation(s)
- Darya Pavlenko
- Dr. Phillip Frost Department of Dermatology and Cutaneous Surgery and Miami Itch Center, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Tasuku Akiyama
- Dr. Phillip Frost Department of Dermatology and Cutaneous Surgery and Miami Itch Center, University of Miami Miller School of Medicine, Miami, FL, USA
| |
Collapse
|
3
|
Arcas JM, Oudaha K, González A, Fernández-Trillo J, Peralta FA, Castro-Marsal J, Poyraz S, Taberner F, Sala S, de la Peña E, Gomis A, Viana F. The ion channel TRPM8 is a direct target of the immunosuppressant rapamycin in primary sensory neurons. Br J Pharmacol 2024. [PMID: 38741464 DOI: 10.1111/bph.16402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 02/29/2024] [Accepted: 03/10/2024] [Indexed: 05/16/2024] Open
Abstract
BACKGROUND AND PURPOSE The mechanistic target of rapamycin (mTOR) signalling pathway is a key regulator of cell growth and metabolism. Its deregulation is implicated in several diseases. The macrolide rapamycin, a specific inhibitor of mTOR, has immunosuppressive, anti-inflammatory and antiproliferative properties. Recently, we identified tacrolimus, another macrolide immunosuppressant, as a novel activator of TRPM8 ion channels, involved in cold temperature sensing, thermoregulation, tearing and cold pain. We hypothesized that rapamycin may also have agonist activity on TRPM8 channels. EXPERIMENTAL APPROACH Using calcium imaging and electrophysiology in transfected HEK293 cells and wildtype or Trpm8 KO mouse DRG neurons, we characterized rapamycin's effects on TRPM8 channels. We also examined the effects of rapamycin on tearing in mice. KEY RESULTS Micromolar concentrations of rapamycin activated rat and mouse TRPM8 channels directly and potentiated cold-evoked responses, effects also observed in human TRPM8 channels. In cultured mouse DRG neurons, rapamycin increased intracellular calcium levels almost exclusively in cold-sensitive neurons. Responses were markedly decreased in Trpm8 KO mice or by TRPM8 channel antagonists. Cutaneous cold thermoreceptor endings were also activated by rapamycin. Topical application of rapamycin to the eye surface evokes tearing in mice by a TRPM8-dependent mechanism. CONCLUSION AND IMPLICATIONS These results identify TRPM8 cationic channels in sensory neurons as novel molecular targets of the immunosuppressant rapamycin. These findings may help explain some of its therapeutic effects after topical application to the skin and the eye surface. Moreover, rapamycin could be used as an experimental tool in the clinic to explore cold thermoreceptors.
Collapse
Affiliation(s)
- José Miguel Arcas
- Instituto de Neurociencias, Universidad Miguel Hernández-CSIC, San Juan de Alicante, Spain
| | - Khalid Oudaha
- Instituto de Neurociencias, Universidad Miguel Hernández-CSIC, San Juan de Alicante, Spain
| | - Alejandro González
- Instituto de Neurociencias, Universidad Miguel Hernández-CSIC, San Juan de Alicante, Spain
| | - Jorge Fernández-Trillo
- Instituto de Neurociencias, Universidad Miguel Hernández-CSIC, San Juan de Alicante, Spain
| | | | - Júlia Castro-Marsal
- Instituto de Neurociencias, Universidad Miguel Hernández-CSIC, San Juan de Alicante, Spain
| | - Seyma Poyraz
- Instituto de Neurociencias, Universidad Miguel Hernández-CSIC, San Juan de Alicante, Spain
| | - Francisco Taberner
- Instituto de Neurociencias, Universidad Miguel Hernández-CSIC, San Juan de Alicante, Spain
| | - Salvador Sala
- Instituto de Neurociencias, Universidad Miguel Hernández-CSIC, San Juan de Alicante, Spain
| | - Elvira de la Peña
- Instituto de Neurociencias, Universidad Miguel Hernández-CSIC, San Juan de Alicante, Spain
| | - Ana Gomis
- Instituto de Neurociencias, Universidad Miguel Hernández-CSIC, San Juan de Alicante, Spain
| | - Félix Viana
- Instituto de Neurociencias, Universidad Miguel Hernández-CSIC, San Juan de Alicante, Spain
| |
Collapse
|
4
|
Trif C, Banica AM, Manolache A, Anghel SA, Huţanu DE, Stratulat T, Badea R, Oprita G, Selescu T, Petrescu SM, Sisignano M, Offermanns S, Babes A, Tunaru S. Inhibition of TRPM8 function by prostacyclin receptor agonists requires coupling to Gq/11 proteins. Br J Pharmacol 2024; 181:1438-1451. [PMID: 38044577 DOI: 10.1111/bph.16295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 11/16/2023] [Accepted: 11/21/2023] [Indexed: 12/05/2023] Open
Abstract
BACKGROUND AND PURPOSE The TRPM8 ion channel is involved in innocuous cold sensing and has a potent anti-inflammatory action. Its activation by lower temperature or chemical agonists such as menthol and icilin induces analgesic effects, reversing hypersensitivity and reducing chronic pain. On the other hand, prostacyclin (PGI2) enhances pain and inflammation by activating the IP receptors. Due to the critical roles of TRPM8 and IP receptors in the regulation of inflammatory pain, and considering their overlapping expression pattern, we analysed the functional interaction between human TRPM8 and IP receptors. EXPERIMENTAL APPROACH We transiently expressed human TRPM8 channels and IP receptors in HEK293T cells and carried out intracellular calcium and cAMP measurements. Additionally, we cultured neurons from the dorsal root ganglia (DRGs) of mice and determined the increase in intracellular calcium triggered by the TRPM8 agonist, icilin, in the presence of the IP receptor agonist cicaprost, the IP receptor antagonist Cay10441, and the Gq/11 inhibitor YM254890. KEY RESULTS Activation of IP receptors by selective agonists (cicaprost, beraprost, and iloprost) inhibited TRPM8 channel function, independently of the Gs-cAMP pathway. The potent inhibition of TRPM8 channels by IP receptor agonists involved Gq/11 coupling. These effects were also observed in neurons isolated from murine DRGs. CONCLUSIONS AND IMPLICATIONS Our results demonstrate an unusual signalling pathway of IP receptors by coupling to Gq/11 proteins to inhibit TRPM8 channel function. This pathway may contribute to a better understanding of the role of TRPM8 channels and IP receptors in regulating pain and inflammation.
Collapse
Affiliation(s)
- Cosmin Trif
- Cell Signalling Research Group, Institute of Biochemistry of the Romanian Academy, Bucharest, Romania
| | - Alexandra-Maria Banica
- Cell Signalling Research Group, Institute of Biochemistry of the Romanian Academy, Bucharest, Romania
| | - Alexandra Manolache
- Department of Anatomy, Physiology, and Biophysics, Faculty of Biology, University of Bucharest, Bucharest, Romania
| | - Sorina Andreea Anghel
- Cell Signalling Research Group, Institute of Biochemistry of the Romanian Academy, Bucharest, Romania
| | - Debora-Elena Huţanu
- Department of Anatomy, Physiology, and Biophysics, Faculty of Biology, University of Bucharest, Bucharest, Romania
| | - Teodora Stratulat
- Cell Signalling Research Group, Institute of Biochemistry of the Romanian Academy, Bucharest, Romania
- Department of Anatomy, Physiology, and Biophysics, Faculty of Biology, University of Bucharest, Bucharest, Romania
| | - Rodica Badea
- Cell Signalling Research Group, Institute of Biochemistry of the Romanian Academy, Bucharest, Romania
| | - George Oprita
- Department of Anatomy, Physiology, and Biophysics, Faculty of Biology, University of Bucharest, Bucharest, Romania
| | - Tudor Selescu
- Department of Anatomy, Physiology, and Biophysics, Faculty of Biology, University of Bucharest, Bucharest, Romania
| | - Stefana M Petrescu
- Cell Signalling Research Group, Institute of Biochemistry of the Romanian Academy, Bucharest, Romania
| | - Marco Sisignano
- Institute of Clinical Pharmacology, Pharmazentrum Frankfurt/ZAFES, University Hospital, Goethe-University, Frankfurt am Main, Germany
| | - Stefan Offermanns
- Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Alexandru Babes
- Department of Anatomy, Physiology, and Biophysics, Faculty of Biology, University of Bucharest, Bucharest, Romania
| | - Sorin Tunaru
- Cell Signalling Research Group, Institute of Biochemistry of the Romanian Academy, Bucharest, Romania
- Prothanor Biotech S.R.L., Bucharest, Romania
| |
Collapse
|
5
|
Zou Z, Fan W, Liu H, Liu Q, He H, Huang F. The roles of 5-HT in orofacial pain. Oral Dis 2024. [PMID: 38622872 DOI: 10.1111/odi.14960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 03/10/2024] [Accepted: 04/02/2024] [Indexed: 04/17/2024]
Abstract
OBJECTIVES Acute and chronic orofacial pain are very common and remain a vexing health problem that has a negative effect on the quality of life. Serotonin (5-HydroxyTryptamine, 5-HT) is a kind of monoamine neurotransmitter that is involved in many physiological and pathological processes. However, its role in orofacial pain remains inconclusive. Therefore, this review aims to summarize the recent advances in understanding the effect exerted by 5-HT on the modulation of orofacial pain. SUBJECTS AND METHODS An extensive search was conducted on PubMed and Web of Science for pertinent studies focusing on the effects of 5-HT on the modulation of orofacial pain. RESULTS In this review, we concisely review how 5-HT mediates orofacial pain, how 5-HT is regulated and how we can translate these findings into clinical applications for the prevention and/or treatment of orofacial pain. CONCLUSIONS 5-HT plays a key role in the modulation of orofacial pain, implying that 5-HT modulators may serve as effective treatment for orofacial pain. However, further research on the precise mechanisms underlying the modulation of orofacial pain is still warranted.
Collapse
Affiliation(s)
- Zhishan Zou
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Wenguo Fan
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Haotian Liu
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Qing Liu
- Paediatric Dentistry and Orthodontics, Faculty of Dentistry, The University of Hong Kong, Hong Kong, SAR, China
| | - Hongwen He
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | - Fang Huang
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| |
Collapse
|
6
|
Leonti M, Baker J, Staub P, Casu L, Hawkins J. Taste shaped the use of botanical drugs. eLife 2024; 12:RP90070. [PMID: 38265283 PMCID: PMC10945733 DOI: 10.7554/elife.90070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2024] Open
Abstract
The perception of taste and flavour (a combination of taste, smell, and chemesthesis), here also referred to as chemosensation, enables animals to find high-value foods and avoid toxins. Humans have learned to use unpalatable and toxic substances as medicines, yet the importance of chemosensation in this process is poorly understood. Here, we generate tasting-panel data for botanical drugs and apply phylogenetic generalised linear mixed models to test whether intensity and complexity of chemosensory qualities as well as particular tastes and flavours can predict ancient Graeco-Roman drug use. We found chemosensation to be strongly predictive of therapeutic use: botanical drugs with high therapeutic versatility have simple yet intense tastes and flavours, and 21 of 22 chemosensory qualities predicted at least one therapeutic use. In addition to the common notion of bitter tasting medicines, we also found starchy, musky, sweet, and soapy drugs associated with versatility. In ancient Greece and Rome, illness was thought to arise from imbalance in bodily fluids or humours, yet our study suggests that uses of drugs were based on observed physiological effects that are often consistent with modern understanding of chemesthesis and taste receptor pharmacology.
Collapse
Affiliation(s)
- Marco Leonti
- Department of Biomedical Sciences, University of Cagliari, Cittadella Universitaria, Monserrato, Italy
| | - Joanna Baker
- School of Biological Sciences, University of Reading, Reading, United Kingdom
| | - Peter Staub
- Department of Biomedical Sciences, University of Cagliari, Cittadella Universitaria, Monserrato, Italy
| | - Laura Casu
- Department of Life and Environmental Sciences, University of Cagliari, Cittadella Universitaria, Monserrato, Italy
| | - Julie Hawkins
- School of Biological Sciences, University of Reading, Reading, United Kingdom
| |
Collapse
|
7
|
Alsalem M, Ellaithy A, Bloukh S, Haddad M, Saleh T. Targeting therapy-induced senescence as a novel strategy to combat chemotherapy-induced peripheral neuropathy. Support Care Cancer 2024; 32:85. [PMID: 38177894 DOI: 10.1007/s00520-023-08287-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Accepted: 12/20/2023] [Indexed: 01/06/2024]
Abstract
Chemotherapy-induced peripheral neuropathy (CIPN) is a treatment-limiting adverse effect of anticancer therapy that complicates the lifestyle of many cancer survivors. There is currently no gold-standard for the assessment or management of CIPN. Subsequently, understanding the underlying mechanisms that lead to the development of CIPN is essential for finding better pharmacological therapy. Therapy-induced senescence (TIS) is a form of senescence that is triggered in malignant and non-malignant cells in response to the exposure to chemotherapy. Recent evidence has also suggested that TIS develops in the dorsal root ganglia of rodent models of CIPN. Interestingly, several components of the senescent phenotype are commensurate with the currently established primary processes implicated in the pathogenesis of CIPN including mitochondrial dysfunction, oxidative stress, and neuroinflammation. In this article, we review the literature that supports the hypothesis that TIS could serve as a holistic mechanism leading to CIPN, and we propose the potential for investigating senotherapeutics as means to mitigate CIPN in cancer survivors.
Collapse
Affiliation(s)
- Mohammad Alsalem
- Department of Anatomy and Histology, School of Medicine, The University of Jordan, Amman, 11942, Jordan
| | - Amr Ellaithy
- Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, 02114, USA
- Department of Neurology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, USA
| | - Sarah Bloukh
- Department of Anatomy and Histology, School of Medicine, The University of Jordan, Amman, 11942, Jordan
| | - Mansour Haddad
- Department of Clinical Pharmacy and Pharmacy Practice, Faculty of Pharmacy, Yarmouk University, Irbid, 21163, Jordan
| | - Tareq Saleh
- Department of Pharmacology and Public Health, Faculty of Medicine, The Hashemite University, Zarqa, 13133, Jordan.
| |
Collapse
|
8
|
Azzarà A, Cassano I, Lintas C, Bernardini L, Pilato F, Capone F, Di Lazzaro V, Gurrieri F. A new gene for autosomal dominant facial palsy/migraine identified in a family by whole exome sequencing. Eur J Neurol 2024; 31:e16088. [PMID: 37823721 DOI: 10.1111/ene.16088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 09/07/2023] [Accepted: 09/21/2023] [Indexed: 10/13/2023]
Abstract
BACKGROUND Facial palsy manifests as unilateral or bilateral weakness and inability to move some of the facial muscles. The aetiology may be different including idiopathic, trauma, infections or brain tumours or it can be associated with chronic neurological diseases. For instance, in recurrent migraine, an increased risk of idiopathic facial palsy (often unilateral) has been observed. Migraine is a neurovascular disorder characterized by mild to severe intensity of headaches, often associated with neuro-ophthalmological symptoms. METHODS A family is reported where five members were affected by facial palsy associated with other clinical features including migraine, diplopia, facial swelling, eye conjunctivitis following a vertical transmission. Whole exome sequencing was performed in three members (two affected and one healthy) in order to identify potential variants causative of their phenotype. RESULTS A missense variant c.304G>A was found leading to the p.(Ala102Thr) substitution in the TRPM8 gene, previously related to migraine by genome wide association studies. This variant was classified as deleterious by several predictor tools, and the mutant residue was predicted to alter the protein structure in terms of flexibility and interactions with the surrounding residues. CONCLUSION These findings suggest that TRPM8 could be a new causative gene further linking migraine and recurrent facial palsy.
Collapse
Affiliation(s)
- Alessia Azzarà
- Research Unit of Medical Genetics, Department of Medicine and Surgery, Università Campus Bio-Medico di Roma, Rome, Italy
| | - Ilaria Cassano
- Research Unit of Medical Genetics, Department of Medicine and Surgery, Università Campus Bio-Medico di Roma, Rome, Italy
| | - Carla Lintas
- Research Unit of Medical Genetics, Department of Medicine and Surgery, Università Campus Bio-Medico di Roma, Rome, Italy
- Operative Research Unit of Medical Genetics, Fondazione Policlinico Universitario Campus Bio-Medico, Rome, Italy
| | | | - Fabio Pilato
- Department of Medicine and Surgery, Unit of Neurology, Neurophysiology, Neurobiology and Psichiatry, Università Campus Bio-Medico di Roma, Roma, Italy
- Fondazione Policlinico Universitario Campus Bio-Medico, Roma, Italy
| | - Fioravante Capone
- Department of Medicine and Surgery, Unit of Neurology, Neurophysiology, Neurobiology and Psichiatry, Università Campus Bio-Medico di Roma, Roma, Italy
- Fondazione Policlinico Universitario Campus Bio-Medico, Roma, Italy
| | - Vincenzo Di Lazzaro
- Department of Medicine and Surgery, Unit of Neurology, Neurophysiology, Neurobiology and Psichiatry, Università Campus Bio-Medico di Roma, Roma, Italy
- Fondazione Policlinico Universitario Campus Bio-Medico, Roma, Italy
| | - Fiorella Gurrieri
- Research Unit of Medical Genetics, Department of Medicine and Surgery, Università Campus Bio-Medico di Roma, Rome, Italy
- Operative Research Unit of Medical Genetics, Fondazione Policlinico Universitario Campus Bio-Medico, Rome, Italy
| |
Collapse
|
9
|
Goel K, Chhetri A, Ludhiadch A, Munshi A. Current Update on Categorization of Migraine Subtypes on the Basis of Genetic Variation: a Systematic Review. Mol Neurobiol 2023:10.1007/s12035-023-03837-3. [PMID: 38135854 DOI: 10.1007/s12035-023-03837-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 11/22/2023] [Indexed: 12/24/2023]
Abstract
Migraine is a complex neurovascular disorder that is characterized by severe behavioral, sensory, visual, and/or auditory symptoms. It has been labeled as one of the ten most disabling medical illnesses in the world by the World Health Organization (Aagaard et al Sci Transl Med 6(237):237ra65, 2014). According to a recent report by the American Migraine Foundation (Shoulson et al Ann Neurol 25(3):252-9, 1989), around 148 million people in the world currently suffer from migraine. On the basis of presence of aura, migraine is classified into two major subtypes: migraine with aura (Aagaard et al Sci Transl Med 6(237):237ra65, 2014) and migraine without aura. (Aagaard K et al Sci Transl Med 6(237):237ra65, 2014) Many complex genetic mechanisms have been proposed in the pathophysiology of migraine but specific pathways associated with the different subtypes of migraine have not yet been explored. Various approaches including candidate gene association studies (CGAS) and genome-wide association studies (Fan et al Headache: J Head Face Pain 54(4):709-715, 2014). have identified the genetic markers associated with migraine and its subtypes. Several single nucleotide polymorphisms (Kaur et al Egyp J Neurol, Psychiatry Neurosurg 55(1):1-7, 2019) within genes involved in ion homeostasis, solute transport, synaptic transmission, cortical excitability, and vascular function have been associated with the disorder. Currently, the diagnosis of migraine is majorly behavioral with no focus on the genetic markers and thereby the therapeutic intervention specific to subtypes. Therefore, there is a need to explore genetic variants significantly associated with MA and MO as susceptibility markers in the diagnosis and targets for therapeutic interventions in the specific subtypes of migraine. Although the proper characterization of pathways based on different subtypes is yet to be studied, this review aims to make a first attempt to compile the information available on various genetic variants and the molecular mechanisms involved with the development of MA and MO. An attempt has also been made to suggest novel candidate genes based on their function to be explored by future research.
Collapse
Affiliation(s)
- Kashish Goel
- Complex Disease Genomics and Precision Medicine Laboratory, Department of Human Genetics and Molecular Medicine, Central University of Punjab, Bathinda, Punjab, India, 151401
| | - Aakash Chhetri
- Complex Disease Genomics and Precision Medicine Laboratory, Department of Human Genetics and Molecular Medicine, Central University of Punjab, Bathinda, Punjab, India, 151401
| | - Abhilash Ludhiadch
- Complex Disease Genomics and Precision Medicine Laboratory, Department of Human Genetics and Molecular Medicine, Central University of Punjab, Bathinda, Punjab, India, 151401
| | - Anjana Munshi
- Complex Disease Genomics and Precision Medicine Laboratory, Department of Human Genetics and Molecular Medicine, Central University of Punjab, Bathinda, Punjab, India, 151401.
| |
Collapse
|
10
|
Genovese F, Xu J, Tizzano M, Reisert J. Quantifying Peripheral Modulation of Olfaction by Trigeminal Agonists. J Neurosci 2023; 43:7958-7966. [PMID: 37813571 PMCID: PMC10669757 DOI: 10.1523/jneurosci.0489-23.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 08/15/2023] [Accepted: 09/06/2023] [Indexed: 10/17/2023] Open
Abstract
In the mammalian nose, two chemosensory systems, the trigeminal and the olfactory mediate the detection of volatile chemicals. Most odorants are able to activate the trigeminal system, and vice versa, most trigeminal agonists activate the olfactory system as well. Although these two systems constitute two separate sensory modalities, trigeminal activation modulates the neural representation of an odor. The mechanisms behind the modulation of olfactory response by trigeminal activation are still poorly understood. We addressed this question by looking at the olfactory epithelium (OE), where olfactory sensory neurons (OSNs) and trigeminal sensory fibers co-localize and where the olfactory signal is generated. Our study was conducted in a mouse model. Both sexes, males and females, were included. We characterize the trigeminal activation in response to five different odorants by measuring intracellular Ca2+ changes from primary cultures of trigeminal neurons (TGNs). We also measured responses from mice lacking TRPA1 and TRPV1 channels known to mediate some trigeminal responses. Next, we tested how trigeminal activation affects the olfactory response in the olfactory epithelium using electro-olfactogram (EOG) recordings from wild-type (WT) and TRPA1/V1-knock out (KO) mice. The trigeminal modulation of the olfactory response was determined by measuring responses to the odorant, 2-phenylethanol (PEA), an odorant with little trigeminal potency after stimulation with a trigeminal agonist. Trigeminal agonists induced a decrease in the EOG response to PEA, which depended on the level of TRPA1 and TRPV1 activation induced by the trigeminal agonist. This suggests that trigeminal activation can alter odorant responses even at the earliest stage of the olfactory sensory transduction.SIGNIFICANCE STATEMENT Most odorants reaching the olfactory epithelium (OE) can simultaneously activate olfactory and trigeminal systems. Although these two systems constitute two separate sensory modalities, trigeminal activation can alter odor perception. Here, we analyzed the trigeminal activity induced by different odorants proposing an objective quantification of their trigeminal potency independent from human perception. We show that trigeminal activation by odorants reduces the olfactory response in the olfactory epithelium and that such modulation correlates with the trigeminal potency of the trigeminal agonist. These results show that the trigeminal system impacts the olfactory response from its earliest stage.
Collapse
Affiliation(s)
| | - Jiang Xu
- Monell Chemical Senses Center, Philadelphia, Pennsylvania 19104
| | - Marco Tizzano
- Monell Chemical Senses Center, Philadelphia, Pennsylvania 19104
| | | |
Collapse
|
11
|
Wittkopf PG, Boye Larsen D, Gregoret L, Graven-Nielsen T. Disrupted Cortical Homeostatic Plasticity Due to Prolonged Capsaicin-induced Pain. Neuroscience 2023; 533:1-9. [PMID: 37774909 DOI: 10.1016/j.neuroscience.2023.09.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 09/08/2023] [Accepted: 09/20/2023] [Indexed: 10/01/2023]
Abstract
Homeostatic plasticity (HP) regulates cortical excitability (CE) stability but is disrupted in persistent pain conditions. This study investigated how prolonged experimental pain affects HP and if pain relief modulates disrupted HP. Twenty-four healthy participants were randomised into a PainRelief or NoPainRelief group and attended four sessions; two sessions on consecutive days, separated by two weeks. Transcranial magnetic stimulation motor-evoked potentials reflecting CE and quantitative sensory testing (QST) measures were recorded. A capsaicin (pain condition) or placebo (control condition) patch was applied to the hand. HP was induced by cathodal-cathodal transcranial direct current stimulation (HP1) with CE assessment before and after. The PainRelief group had ice applied to the patch, while the NoPainRelief group waited for five minutes; subsequently another HP induction (HP2) and CE assessment were performed. After 24 h with the patch on, HP induction (HP3), QST, and CE recordings were repeated. Capsaicin reduced CE and the pain condition showed disrupted homeostatic responses at all time points (HP1: showed CE inhibition instead of facilitation; HP2 & HP3: lack of CE facilitation). Conversely, homeostatic responses were induced at all time points for the placebo condition. Capsaicin pain disrupts HP which is not restored by ice-induced pain relief. Future research may explore the prevention of HP disruption by targeting capsaicin-induced nociception but not pain perception.
Collapse
Affiliation(s)
- Priscilla Geraldine Wittkopf
- Center for Neuroplasticity and Pain (CNAP), Department of Health Science and Technology, Aalborg University, Selma Lagerløfs Vej 249, 9260 Gistrup, Aalborg, Denmark
| | - Dennis Boye Larsen
- Center for Neuroplasticity and Pain (CNAP), Department of Health Science and Technology, Aalborg University, Selma Lagerløfs Vej 249, 9260 Gistrup, Aalborg, Denmark
| | - Luisina Gregoret
- Center for Neuroplasticity and Pain (CNAP), Department of Health Science and Technology, Aalborg University, Selma Lagerløfs Vej 249, 9260 Gistrup, Aalborg, Denmark
| | - Thomas Graven-Nielsen
- Center for Neuroplasticity and Pain (CNAP), Department of Health Science and Technology, Aalborg University, Selma Lagerløfs Vej 249, 9260 Gistrup, Aalborg, Denmark.
| |
Collapse
|
12
|
Komura M, Miyata S, Yoshimura R. Icilin, a cool/cold-inducing agent, alleviates lipopolysaccharide-induced septic sickness responses in mice. Neurosci Lett 2023; 816:137492. [PMID: 37742941 DOI: 10.1016/j.neulet.2023.137492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 09/11/2023] [Accepted: 09/19/2023] [Indexed: 09/26/2023]
Abstract
Sepsis is a significant global public health challenge, resulting in millions of human deaths annually. Transient receptor potential melastatin 8 (TRPM8), a non-selective ion channel, is the primary cold sensor in humans; however, its effects on endotoxin-induced inflammation remain unclear. We previously reported that TRPM8 knockout mice exhibited more severe physiological and behavioral endotoxemia responses upon a high-dose injection with lipopolysaccharide (LPS). In the present study, we investigated whether icilin, a TRPM8 agonist, was a target for the suppression of sickness responses using a mouse model of LPS-induced sepsis. A peripheral high-dose injection of LPS at 5 mg/kg showed a maximal body temperature decrease of 5.1 °C in mice subcutaneously pretreated with vehicle and 1.5 °C in icilin-pretreated animals. The decline in locomotor activity was attenuated in icilin-pretreated mice and its recovery was faster; however, the high-dose LPS injection rapidly decreased locomotor activity regardless of the icilin pretreatment. Furthermore, the icilin pretreatment attenuated LPS-induced decreases in body weight and food and water intakes and accelerated recovery from these sickness responses. Therefore, the present results demonstrated that the icilin pretreatment alleviated LPS-induced sickness responses or decreases in body temperature, locomotor activity, body weight loss, and food and water intakes, suggesting its potential as a therapeutic target for sepsis.
Collapse
Affiliation(s)
- Mari Komura
- Department of Applied Biology, Kyoto Institute of Technology Matsugasaki, Sakyo-ku, Kyoto 606-8585 Japan
| | - Seiji Miyata
- Department of Applied Biology, Kyoto Institute of Technology Matsugasaki, Sakyo-ku, Kyoto 606-8585 Japan.
| | - Ryoichi Yoshimura
- Department of Applied Biology, Kyoto Institute of Technology Matsugasaki, Sakyo-ku, Kyoto 606-8585 Japan.
| |
Collapse
|
13
|
Thouaye M, Yalcin I. Neuropathic pain: From actual pharmacological treatments to new therapeutic horizons. Pharmacol Ther 2023; 251:108546. [PMID: 37832728 DOI: 10.1016/j.pharmthera.2023.108546] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2023] [Revised: 09/07/2023] [Accepted: 10/05/2023] [Indexed: 10/15/2023]
Abstract
Neuropathic pain, caused by a lesion or disease affecting the somatosensory system, affects between 3 and 17% of the general population. The treatment of neuropathic pain is challenging due to its heterogeneous etiologies, lack of objective diagnostic tools and resistance to classical analgesic drugs. First-line treatments recommended by the Special Interest Group on Neuropathic Pain (NeuPSIG) and European Federation of Neurological Societies (EFNS) include gabapentinoids, tricyclic antidepressants (TCAs) and selective serotonin noradrenaline reuptake inhibitors (SNRIs). Nevertheless these treatments have modest efficacy or dose limiting side effects. There is therefore a growing number of preclinical and clinical studies aim at developing new treatment strategies to treat neuropathic pain with better efficacy, selectivity, and less side effects. In this review, after a brief description of the mechanisms of action, efficacy, and limitations of current therapeutic drugs, we reviewed new preclinical and clinical targets currently under investigation, as well as promising non-pharmacological alternatives and their potential co-use with pharmacological treatments.
Collapse
Affiliation(s)
- Maxime Thouaye
- Centre National de la Recherche Scientifique, Université de Strasbourg, Institut des Neurosciences Cellulaires et Intégratives, Strasbourg, France
| | - Ipek Yalcin
- Centre National de la Recherche Scientifique, Université de Strasbourg, Institut des Neurosciences Cellulaires et Intégratives, Strasbourg, France; Department of Psychiatry and Neuroscience, Université Laval, Québec, QC G1V 0A6, Canada.
| |
Collapse
|
14
|
Mocci E, Ward K, Perry JA, Starkweather A, Stone LS, Schabrun SM, Renn C, Dorsey SG, Ament SA. Genome wide association joint analysis reveals 99 risk loci for pain susceptibility and pleiotropic relationships with psychiatric, metabolic, and immunological traits. PLoS Genet 2023; 19:e1010977. [PMID: 37844115 PMCID: PMC10602383 DOI: 10.1371/journal.pgen.1010977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 10/26/2023] [Accepted: 09/14/2023] [Indexed: 10/18/2023] Open
Abstract
Chronic pain is at epidemic proportions in the United States, represents a significant burden on our public health system, and is coincident with a growing opioid crisis. While numerous genome-wide association studies have been reported for specific pain-related traits, many of these studies were underpowered, and the genetic relationship among these traits remains poorly understood. Here, we conducted a joint analysis of genome-wide association study summary statistics from seventeen pain susceptibility traits in the UK Biobank. This analysis revealed 99 genome-wide significant risk loci, 65 of which overlap loci identified in earlier studies. The remaining 34 loci are novel. We applied leave-one-trait-out meta-analyses to evaluate the influence of each trait on the joint analysis, which suggested that loci fall into four categories: loci associated with nearly all pain-related traits; loci primarily associated with a single trait; loci associated with multiple forms of skeletomuscular pain; and loci associated with headache-related pain. Overall, 664 genes were mapped to the 99 loci by genomic proximity, eQTLs, and chromatin interaction and ~15% of these genes showed differential expression in individuals with acute or chronic pain compared to healthy controls. Risk loci were enriched for genes involved in neurological and inflammatory pathways. Genetic correlation and two-sample Mendelian randomization indicated that psychiatric, metabolic, and immunological traits mediate some of these effects.
Collapse
Affiliation(s)
- Evelina Mocci
- Department of Pain & Translational Symptom Science, University of Maryland School of Nursing, Baltimore, Maryland, United States of America
- Center to Advance Chronic Pain Research (CACPR), University of Maryland Baltimore, Baltimore, Maryland, United States of America
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, Maryland, United States of America
| | - Kathryn Ward
- Department of Pain & Translational Symptom Science, University of Maryland School of Nursing, Baltimore, Maryland, United States of America
| | - James A. Perry
- Department of Medicine, University of Maryland School of Medicine, Baltimore, Maryland, United States of America
| | - Angela Starkweather
- Department of Biobehavioral Nursing Science, University of Florida College of Nursing, Gainesville, Florida, United States of America
| | - Laura S. Stone
- Department of Anesthesiology, University of Minnesota Medical School, Minneapolis, Minnesota, United States of America
| | - Siobhan M. Schabrun
- School of Physical Therapy, University of Western Ontario, London, Ontario, Canada
| | - Cynthia Renn
- Department of Pain & Translational Symptom Science, University of Maryland School of Nursing, Baltimore, Maryland, United States of America
- Center to Advance Chronic Pain Research (CACPR), University of Maryland Baltimore, Baltimore, Maryland, United States of America
| | - Susan G. Dorsey
- Department of Pain & Translational Symptom Science, University of Maryland School of Nursing, Baltimore, Maryland, United States of America
- Center to Advance Chronic Pain Research (CACPR), University of Maryland Baltimore, Baltimore, Maryland, United States of America
| | - Seth A. Ament
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, Maryland, United States of America
- Department of Psychiatry, University of Maryland School of Medicine, Baltimore, Maryland, United States of America
| |
Collapse
|
15
|
Peng S, Xia Y, Wang Y, Yu X, Wu Z, Zhang L, Xu K, Shen L, Luo H. Research hotspots and trend analysis of abdominal pain in inflammatory bowel disease: a bibliometric and visualized analysis. Front Pharmacol 2023; 14:1220418. [PMID: 37808188 PMCID: PMC10552780 DOI: 10.3389/fphar.2023.1220418] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Accepted: 09/11/2023] [Indexed: 10/10/2023] Open
Abstract
Aims: The study aimed to provide a bibliometric and visual analysis of research on abdominal pain in inflammatory bowel disease and discuss the current status, research hotspots, and future developments. Methods: We used the Web of Science Core Collection to comprehensively search the literature on abdominal pain-related research in IBD published between 2003 and 2022. The bibliometric and visual analysis was performed through CiteSpace, VOSviewer software, R language, and the bibliometric online analysis platform, including authors, institutions, countries, journals, references, and keywords in the literature. Results: A total of 3,503 relevant articles are included, indicating that the number of articles in this field has increased in recent years. The United States leads the way with a dominant position in terms of article output, followed by China and JAPAN. United States (967 articles), University of Calgary (98 articles), and World Journal of Gastroenterology (127 articles) are the top publishing countries, institutions, and journals, respectively; keyword analysis shows that gut microbiota, depression, stress, visceral hypersensitivity, and multidisciplinary approach are the hot spots and trends in this research area. Conclusion: Abdominal pain-related studies in IBD have received increasing attention in the past two decades. This study provides the first bibliometric analysis of papers in this research area using visualization software and data information mining. It provides insights into this field's current status, hot spots, and trends. However, many outstanding issues in this research area still need further exploration to provide a theoretical basis for its clinical application.
Collapse
Affiliation(s)
- Shuai Peng
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, China
- Hubei Key Laboratory of Digestive Diseases, Renmin Hospital of Wuhan University, Wuhan, China
| | - Yuan Xia
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, China
- Hubei Key Laboratory of Digestive Diseases, Renmin Hospital of Wuhan University, Wuhan, China
| | - Ying Wang
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, China
- Hubei Key Laboratory of Digestive Diseases, Renmin Hospital of Wuhan University, Wuhan, China
| | - Xiaoyun Yu
- Department of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zunan Wu
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, China
- Hubei Key Laboratory of Digestive Diseases, Renmin Hospital of Wuhan University, Wuhan, China
| | - Li Zhang
- Department of Neurology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Ke Xu
- Department of Neurology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Lei Shen
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, China
- Hubei Key Laboratory of Digestive Diseases, Renmin Hospital of Wuhan University, Wuhan, China
| | - Hesheng Luo
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, China
- Hubei Key Laboratory of Digestive Diseases, Renmin Hospital of Wuhan University, Wuhan, China
| |
Collapse
|
16
|
Tsutsumi Y, Momma H, Ebihara S, Nagatomi R. L-menthol administration facilitates breathing comfort during exhaustive endurance running and improves running capacity in well-trained runners: A randomized crossover study. Eur J Sport Sci 2023; 23:1913-1921. [PMID: 35997234 DOI: 10.1080/17461391.2022.2115404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
ABSTRACTThis study aimed to clarify the contribution of L-menthol administration to endurande exercise capacity. Thirteen male runners (age, 35.8 ± 7.8 years; peak oxygen uptake, 62.7 ± 6.8 mL kg-1 min-1) ran on treadmills at fixed intensities of their anaerobic thresholds to exhaustion. All participants underwent three trials-water ingestion (W-IG), L-menthol mouth rinsing (M-MR), and L-menthol ingestion (M-IG)- in a random order every 5 min while running. Breathing comfort (BC) was measured immediately after fluid intake. Dyspnea threshold against external inspiratory resistance was examined before and after the running test. The running time with M-IG (1683.9 ± 520.3 s) was longer than that with W-IG (1410.2 ± 465.9 s, effect size [ES] = 0.55). BC with M-IG (2.00 ± 0.74) was higher than that with W-IG (0.42 ± 0.79) at exhaustion (ES > 2.00). The dyspnea threshold after running decreased to 19.2 ± 7.6 cm H₂O L-1 s-1 with W-IG, whereas that with M-MR (26.2 ± 6.5 cm H₂O L-1 s-1) and M-IG (29.2 ± 2.8 cm H₂O L-1 s-1) remained high (p for interaction < 0.001). M-IG facilitated BC during running, improved endurance capacity, and prevented decreases in the dyspnea threshold against external inspiratory resistance after exhaustive running.HighlightsL-menthol ingestion facilitated breathing comfort during high intensity endurance running and improved exhaustive endurance running capacity.Even after exhaustion, L-menthol solution relieved dyspnea sensitivity against external inspiratory resistance.L-menthol ingestion might help athletes improve their endurance running capacity.
Collapse
Affiliation(s)
- Yoshiko Tsutsumi
- Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Haruki Momma
- Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Satoru Ebihara
- Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Ryoichi Nagatomi
- Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
- Tohoku University Graduate School of Biomedical Engineering, Sendai, Miyagi, Japan
| |
Collapse
|
17
|
Pertusa M, Solorza J, Madrid R. Molecular determinants of TRPM8 function: key clues for a cool modulation. Front Pharmacol 2023; 14:1213337. [PMID: 37388453 PMCID: PMC10301734 DOI: 10.3389/fphar.2023.1213337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Accepted: 05/30/2023] [Indexed: 07/01/2023] Open
Abstract
Cold thermoreceptor neurons detect temperature drops with highly sensitive molecular machinery concentrated in their peripheral free nerve endings. The main molecular entity responsible for cold transduction in these neurons is the thermo-TRP channel TRPM8. Cold, cooling compounds such as menthol, voltage, and osmolality rises activate this polymodal ion channel. Dysregulation of TRPM8 activity underlies several physiopathological conditions, including painful cold hypersensitivity in response to axonal damage, migraine, dry-eye disease, overactive bladder, and several forms of cancer. Although TRPM8 could be an attractive target for treating these highly prevalent diseases, there is still a need for potent and specific modulators potentially suitable for future clinical trials. This goal requires a complete understanding of the molecular determinants underlying TRPM8 activation by chemical and physical agonists, inhibition by antagonists, and the modulatory mechanisms behind its function to guide future and more successful treatment strategies. This review recapitulates information obtained from different mutagenesis approaches that have allowed the identification of specific amino acids in the cavity comprised of the S1-S4 and TRP domains that determine modulation by chemical ligands. In addition, we summarize different studies revealing specific regions within the N- and C-terminus and the transmembrane domain that contribute to cold-dependent TRPM8 gating. We also highlight the latest milestone in the field: cryo-electron microscopy structures of TRPM8, which have provided a better comprehension of the 21 years of extensive research in this ion channel, shedding light on the molecular bases underlying its modulation, and promoting the future rational design of novel drugs to selectively regulate abnormal TRPM8 activity under pathophysiological conditions.
Collapse
Affiliation(s)
- María Pertusa
- Departamento de Biología, Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, Chile
- Millennium Nucleus of Ion Channel-Associated Diseases (MiNICAD), Santiago, Chile
- Millennium Nucleus for the Study of Pain (MiNuSPain), Santiago, Chile
| | - Jocelyn Solorza
- Millennium Nucleus of Ion Channel-Associated Diseases (MiNICAD), Santiago, Chile
- Centro de Bioinformática, Simulación y Modelado (CBSM), Facultad de Ingeniería, Universidad de Talca, Talca, Chile
| | - Rodolfo Madrid
- Departamento de Biología, Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, Chile
- Millennium Nucleus of Ion Channel-Associated Diseases (MiNICAD), Santiago, Chile
- Millennium Nucleus for the Study of Pain (MiNuSPain), Santiago, Chile
| |
Collapse
|
18
|
Makibuchi T, Yamashiro K, Anazawa S, Fujimoto T, Ochi G, Ikarashi K, Sato D. Assessing the Effects of the Topical Application of L-Menthol on Pain-Related Somatosensory-Evoked Potentials Using Intra-Epidermal Stimulation. Brain Sci 2023; 13:918. [PMID: 37371396 DOI: 10.3390/brainsci13060918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 06/03/2023] [Accepted: 06/05/2023] [Indexed: 06/29/2023] Open
Abstract
L-menthol is known to activate transient receptor potential melastatin 8 (TRPM8) and induce analgesia to thermal stimuli. However, since thermal stimulation leads to the interaction among the other TRP channels, it was unclear whether L-menthol causes analgesia to stimuli other than thermal stimuli. Therefore, we aimed to investigate whether activating TRPM8 via topical application of 10% menthol solution attenuates pain-related somatosensory-evoked potentials (pSEPs) and affects numerical rating scale (NRS) score using intra-epidermal electrical stimulation (IES). We applied 10% L-menthol or control solution on the dorsum of the right hand of 25 healthy participants. The pSEP and NRS, elicited by IES, and sensory threshold were measured before and after each solution was applied. The results showed that the topical application of 10% L-menthol solution significantly reduced N2-P2 amplitude in pSEPs compared with the control solution. Moreover, the N2 latency was significantly prolonged upon the topical application of L-menthol solution. NRS scores were similar under both conditions. These results suggest that topical application of L-menthol does not alter subjective sensation induced using IES, although it may attenuate afferent signals at free nerve endings even with stimuli that do not directly activate TRP channels.
Collapse
Affiliation(s)
- Taiki Makibuchi
- Institute for Human Movement and Medical Sciences, Niigata University of Health and Welfare, Niigata 950-3198, Japan
- Field of Health and Sports, Graduate School of Niigata University of Health and Welfare, Niigata 950-3198, Japan
| | - Koya Yamashiro
- Institute for Human Movement and Medical Sciences, Niigata University of Health and Welfare, Niigata 950-3198, Japan
- Department of Health and Sports, Niigata University of Health and Welfare, Niigata 950-3198, Japan
| | - Sayaka Anazawa
- Field of Health and Sports, Graduate School of Niigata University of Health and Welfare, Niigata 950-3198, Japan
| | - Tomomi Fujimoto
- Institute for Human Movement and Medical Sciences, Niigata University of Health and Welfare, Niigata 950-3198, Japan
- Department of Health and Sports, Niigata University of Health and Welfare, Niigata 950-3198, Japan
| | - Genta Ochi
- Institute for Human Movement and Medical Sciences, Niigata University of Health and Welfare, Niigata 950-3198, Japan
- Department of Health and Sports, Niigata University of Health and Welfare, Niigata 950-3198, Japan
| | - Koyuki Ikarashi
- Institute for Human Movement and Medical Sciences, Niigata University of Health and Welfare, Niigata 950-3198, Japan
- Department of Health and Sports, Niigata University of Health and Welfare, Niigata 950-3198, Japan
| | - Daisuke Sato
- Institute for Human Movement and Medical Sciences, Niigata University of Health and Welfare, Niigata 950-3198, Japan
- Department of Health and Sports, Niigata University of Health and Welfare, Niigata 950-3198, Japan
| |
Collapse
|
19
|
Tian W, He D, Liu J, Chen F, Zhang W, Hu J, Wang S. Topical borneol relieves nonhistaminergic pruritus via targeting TRPA1 and TRPM8 channels in peripheral nerve terminals of mice. Eur J Pharmacol 2023:175833. [PMID: 37290679 DOI: 10.1016/j.ejphar.2023.175833] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Revised: 04/26/2023] [Accepted: 06/06/2023] [Indexed: 06/10/2023]
Abstract
Borneol has been used successfully for the treatment of itchy skin in traditional Chinese medicine. However, the antipruritic effect of borneol has rarely been studied, and the mechanism is unclear. Here, we showed that topical application of borneol on skin substantially suppressed pruritogen chloroquine- and compound 48/80-induced itching in mice. The potential targets of borneol, including transient receptor potential cation channel subfamily V member 3 (TRPV3), transient receptor potential cation channel subfamily A member 1 (TRPA1), transient receptor potential cation channel subfamily M member 8 (TRPM8), and gamma-aminobutyric acid type A (GABAA) receptor were pharmacologically inhibited or genetically knocked out one by one in mouse. Itching behavior studies demonstrated that the antipruritic effect of borneol is largely independent of TRPV3 and GABAA receptor, and TRPA1 and TRPM8 channels are responsible for a major portion of the effect of borneol on chloroquine-induced nonhistaminergic itching. Borneol activates TRPM8 and inhibits TRPA1 in sensory neurons of mice. Topical co-application of TRPA1 antagonist and TRPM8 agonist mimicked the effect of borneol on chloroquine-induced itching. Intrathecal injection of a group II metabotropic glutamate receptor antagonist partially attenuated the effect of borneol and completely abolished the effect of TRPM8 agonist on chloroquine-induced itching, suggesting that a spinal glutamatergic mechanism is involved. In contrast, the effect of borneol on compound 48/80-induced histaminergic itching occurs through TRPA1-and TRPM8-independent mechanisms. Our work demonstrates that borneol is an effective topical itch reliever, and TRPA1 inhibition and TRPM8 activation in peripheral nerve terminals account for its antipruritic effect.
Collapse
Affiliation(s)
- Weifeng Tian
- Department of Neurology, Institute of Neuroscience, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, The Second Affiliated Hospital, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, China; State Key Laboratory of Primate Biomedical Research, Institute of Primate Translational Medicine, Kunming University of Science and Technology, Kunming, China; Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences & Yunnan Province, and Ion Channel Research and Drug Development Center, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China
| | - Dongmei He
- Department of Neurology, Institute of Neuroscience, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, The Second Affiliated Hospital, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, China
| | - Jingjing Liu
- Department of Neurology, Institute of Neuroscience, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, The Second Affiliated Hospital, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, China
| | - Feiyu Chen
- Department of Neurology, Institute of Neuroscience, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, The Second Affiliated Hospital, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, China
| | - Wenjie Zhang
- Department of Neurology, Institute of Neuroscience, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, The Second Affiliated Hospital, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, China
| | - Jinsheng Hu
- State Key Laboratory of Primate Biomedical Research, Institute of Primate Translational Medicine, Kunming University of Science and Technology, Kunming, China.
| | - Shu Wang
- Department of Neurology, Institute of Neuroscience, Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, The Second Affiliated Hospital, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, China.
| |
Collapse
|
20
|
Kupari J, Ernfors P. Molecular taxonomy of nociceptors and pruriceptors. Pain 2023; 164:1245-1257. [PMID: 36718807 PMCID: PMC10184562 DOI: 10.1097/j.pain.0000000000002831] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 11/10/2022] [Accepted: 11/21/2022] [Indexed: 02/01/2023]
Affiliation(s)
- Jussi Kupari
- Division of Molecular Neurobiology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Patrik Ernfors
- Division of Molecular Neurobiology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| |
Collapse
|
21
|
Shetty R, Shetty N, Shirodkar S, Ashok N, Sethu S, Ghosh A, Khamar P. Cold bandage contact lens use reduces post-photorefractive keratectomy or corneal collagen-crosslinking pain perception in patients. Indian J Ophthalmol 2023; 71:1855-1861. [PMID: 37203044 PMCID: PMC10391479 DOI: 10.4103/ijo.ijo_2757_22] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/20/2023] Open
Abstract
Purpose To compare post-operative pain perception using bandage contact lens (BCL) stored at 2-8°C (Cold BCL, CL-BCL) or room temperature (23 - 25°C, RT-BCL) after photorefractive keratectomy (PRK) or corneal collagen-crosslinking (CXL) and determine status of nociception associated factors. Methods In this prospective interventional study, 56 patients undergoing PRK for refractive correction and 100 keratoconus (KC) undergoing CXL were recruited following approval from the institutional ethics committee with informed consent. Patients undergoing bilateral PRK received RT-BCL on one eye and CL-BCL on the other. Pain was graded by Wong-Baker scoring on the first post-operative day (PoD1). Expression of transient receptor potential channels (TRPV1, TRPA1, TRPM8), calcitonin gene-related peptide (CGRP) and IL-6 was measured in cellular content from used BCLs collected on PoD1. Equal number of KC patients received RT-BCL or CL-BCL post-CXL. Pain was graded by Wong-Baker scoring on PoD1. Results Pain scores on PoD1 were significantly (P < 0.0001) reduced in subjects receiving CL-BCL (Mean ± SD: 2.6 ± 2.1) compared to RT-BCL (6.0 ± 2.4) post-PRK. 80.4% of subjects reported reduced pain scores with CL-BCL. 19.6% reported no change or increased pain scores with CL-BCL. TRPM8 expression was significantly (P < 0.05) increased in BCL of subjects reporting reduced pain with CL-BCL compared to those who did not. Pain scores on PoD1 were significantly (P < 0.0001) reduced in subjects receiving CL-BCL (3.2 ± 2.1) compared to RT-BCL (7.2 ± 1.8) post-CXL. Conclusion The simple approach of using a cold BCL post-operatively substantially reduced pain perception and could overcome post-operative pain-related limited acceptance of PRK/CXL.
Collapse
Affiliation(s)
- Rohit Shetty
- Department of Cornea and Refractive Surgery, Narayana Nethralaya, Bangalore, Karnataka, India
| | - Naren Shetty
- Department of Cataract and Refractive Surgery, Narayana Nethralaya, Bangalore, Karnataka, India
| | - Sailie Shirodkar
- Department of Cataract and Refractive Surgery, Narayana Nethralaya, Bangalore, Karnataka, India
| | - Nikhil Ashok
- GROW Research Laboratories, Narayana Nethralaya Foundation, Bangalore, Karnataka, India
| | - Swaminathan Sethu
- GROW Research Laboratories, Narayana Nethralaya Foundation, Bangalore, Karnataka, India
| | - Arkasubhra Ghosh
- GROW Research Laboratories, Narayana Nethralaya Foundation, Bangalore, Karnataka, India
| | - Pooja Khamar
- Department of Cataract and Refractive Surgery, Narayana Nethralaya, Bangalore, Karnataka, India
| |
Collapse
|
22
|
Khalilzadeh E, Aliyoldashi M, Abdkarimi B, Azarpey F, Vafaei Saiah G, Hazrati R, Caspani O. Reversal of cold intolerance by testosterone in orchiectomized mice after tibial nerve transection. Behav Brain Res 2023; 441:114269. [PMID: 36574845 DOI: 10.1016/j.bbr.2022.114269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 11/25/2022] [Accepted: 12/15/2022] [Indexed: 12/25/2022]
Abstract
Cold intolerance is a debilitating effect of nerve injury, has a strong impact on the life of patients and no advisable treatment exists against it. Testosterone influences pain pathways and has analgesic effects. A recent study showed testosterone as being an agonist of TRPM8, the predominant ion channel that contributes to cold hypersensitivity after injury. We investigated the effect of testosterone on cold sensitivity after nerve injury. Specifically, using the double plate test (DPT) (thermo-neutral-plate: 31 ºC and cold-plate: 18 ºC) we determined the thermal preference of mice at different points during the study design consisting of: orchiectomy, tibial nerve transection (TNT) (30 days after orchiectomy), 15-days-repeated subcutaneous injections of testosterone enanthate (250 or 500 µg/kg/day) or vehicle (started 12 h after TNT surgery). Different parameters such as time spent on cold plates, distance traveled, animal speed on the cold- and thermo-neutral-plates were determined in naïve, sham and neuropathic animals. Neither orchiectomy nor sham TNT surgery generate effects on cold intolerance and animal activity while TNT surgery decreased the time spent on the cold-plate and the distance traveled during DPT. Testosterone administration reversed the effect of nerve injury, decreasing the cold hypersensitivity and increasing activity of TNT mice. However, the effect of testosterone on cold avoidance reduced with time and at 14 days after TNT surgery, a higher dose was needed to reverse the effect generated by nerve injury. This indicates that although testosterone administration has a positive effect on cold intolerance, it might not be suitable for prolongated treatment.
Collapse
Affiliation(s)
- Emad Khalilzadeh
- Division of physiology, Department of Basic Sciences, Faculty of Veterinary Medicine, University of Tabriz, Tabriz, Iran; Neurophysiology Department, Medical Faculty Mannheim of the University of Heidelberg, Mannheim Center for Translational Neuroscience (MCTN), Ludolf-Krehl-Str., 68167 Mannheim, Germany.
| | - Mohammadhassan Aliyoldashi
- Division of physiology, Department of Basic Sciences, Faculty of Veterinary Medicine, University of Tabriz, Tabriz, Iran
| | - Babak Abdkarimi
- Division of physiology, Department of Basic Sciences, Faculty of Veterinary Medicine, University of Tabriz, Tabriz, Iran
| | - Farzin Azarpey
- Division of physiology, Department of Basic Sciences, Faculty of Veterinary Medicine, University of Tabriz, Tabriz, Iran; Neurophysiology Department, Medical Faculty Mannheim of the University of Heidelberg, Mannheim Center for Translational Neuroscience (MCTN), Ludolf-Krehl-Str., 68167 Mannheim, Germany
| | - Gholamreza Vafaei Saiah
- Division of physiology, Department of Basic Sciences, Faculty of Veterinary Medicine, University of Tabriz, Tabriz, Iran
| | - Reza Hazrati
- Brain Research Center, Laval University, Quebec, Canada
| | - Ombretta Caspani
- Neurophysiology Department, Medical Faculty Mannheim of the University of Heidelberg, Mannheim Center for Translational Neuroscience (MCTN), Ludolf-Krehl-Str., 68167 Mannheim, Germany
| |
Collapse
|
23
|
Hooper JS, Taylor-Clark TE. Irritant-evoked reflex tachyarrhythmia in spontaneously hypertensive rats is reduced by inhalation of TRPM8 agonists l-menthol and WS-12. J Appl Physiol (1985) 2023; 134:307-315. [PMID: 36603045 PMCID: PMC9886351 DOI: 10.1152/japplphysiol.00495.2022] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 12/06/2022] [Accepted: 12/24/2022] [Indexed: 01/06/2023] Open
Abstract
Inhalation of noxious irritants activates nociceptive sensory afferent nerves innervating the airways, inducing reflex regulation of autonomic networks and the modulation of respiratory drive and cardiovascular (CV) parameters such as heart rate and blood pressure. In healthy mammals, irritant-evoked pulmonary-cardiac reflexes cause parasympathetic-mediated bradycardia. However, in spontaneously hypertensive (SH) rats, irritant inhalation also increases sympathetic drive to the heart. This remodeled pulmonary-cardiac reflex may contribute to cardiovascular risk caused by inhalation of air pollutants/irritants in susceptible individuals with cardiovascular disease (CVD). Previous studies have shown that the cooling mimic l-menthol, an agonist for the cold-sensitive transient receptor potential melastatin 8 (TRPM8), can alleviate nasal inflammatory symptoms and respiratory reflexes evoked by irritants. Here, we investigated the impact of inhalation of TRPM8 agonists l-menthol and WS-12 on pulmonary-cardiac reflexes evoked by inhalation of the irritant allyl isothiocyanate (AITC) using radiotelemetry. l-Menthol, but not its inactive analog d-menthol, significantly reduced the AITC-evoked reflex tachycardia and premature ventricular contractions (PVCs) in SH rats but had no effect on the AITC-evoked bradycardia in either SH or normotensive Wistar-Kyoto (WKY) rats. WS-12 reduced AITC-evoked tachycardia and PVCs in SH rats, but this more potent TRPM8 agonist also reduced AITC-evoked bradycardia. l-Menthol had no effect on heart rate when given alone, whereas WS-12 evoked a minor bradycardia in WKY rats. We conclude that stimulation of TRPM8-expressing afferents within the airways reduces irritant-evoked pulmonary-cardiac reflexes, especially the aberrant reflex tachyarrhythmia in SH rats. Airway menthol treatment may be an effective therapy for reducing pollution-associated CV exacerbations.NEW & NOTEWORTHY Irritant-evoked pulmonary-cardiac reflexes are remodeled in spontaneously hypertensive (SH) rats-causing de novo sympathetic reflexes that drive tachyarrhythmia. This remodeling may contribute to air pollution-associated risk in susceptible individuals with cardiovascular disease. We found that inhalation of TRPM8 agonists, l-menthol and WS-12, but not the inactive analog d-menthol, selectively reduces the reflex tachyarrhythmia evoked by allyl isothiocyanate (AITC) inhalation in SH rats. Use of menthol may protect susceptible individuals from pollution-associated CV exacerbations.
Collapse
Affiliation(s)
- J Shane Hooper
- Department of Molecular Pharmacology and Physiology, Morsani College of Medicine, University of South Florida, Tampa, Florida
| | - Thomas E Taylor-Clark
- Department of Molecular Pharmacology and Physiology, Morsani College of Medicine, University of South Florida, Tampa, Florida
| |
Collapse
|
24
|
Albisetti GW, Ganley RP, Pietrafesa F, Werynska K, Magalhaes de Sousa M, Sipione R, Scheurer L, Bösl MR, Pelczar P, Wildner H, Zeilhofer HU. Inhibitory Kcnip2 neurons of the spinal dorsal horn control behavioral sensitivity to environmental cold. Neuron 2023; 111:92-105.e5. [PMID: 36323322 PMCID: PMC9831669 DOI: 10.1016/j.neuron.2022.10.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 08/16/2022] [Accepted: 10/04/2022] [Indexed: 11/12/2022]
Abstract
Proper sensing of ambient temperature is of utmost importance for the survival of euthermic animals, including humans. While considerable progress has been made in our understanding of temperature sensors and transduction mechanisms, the higher-order neural circuits processing such information are still only incompletely understood. Using intersectional genetics in combination with circuit tracing and functional neuron manipulation, we identified Kcnip2-expressing inhibitory (Kcnip2GlyT2) interneurons of the mouse spinal dorsal horn as critical elements of a neural circuit that tunes sensitivity to cold. Diphtheria toxin-mediated ablation of these neurons increased cold sensitivity without affecting responses to other somatosensory modalities, while their chemogenetic activation reduced cold and also heat sensitivity. We also show that Kcnip2GlyT2 neurons become activated preferentially upon exposure to cold temperatures and subsequently inhibit spinal nociceptive output neurons that project to the lateral parabrachial nucleus. Our results thus identify a hitherto unknown spinal circuit that tunes cold sensitivity.
Collapse
Affiliation(s)
- Gioele W. Albisetti
- Institute of Pharmacology and Toxicology, University of Zurich, 8057 Zürich, Switzerland
| | - Robert P. Ganley
- Institute of Pharmacology and Toxicology, University of Zurich, 8057 Zürich, Switzerland
| | - Francesca Pietrafesa
- Institute of Pharmacology and Toxicology, University of Zurich, 8057 Zürich, Switzerland
| | - Karolina Werynska
- Institute of Pharmacology and Toxicology, University of Zurich, 8057 Zürich, Switzerland
| | | | - Rebecca Sipione
- Institute of Pharmacology and Toxicology, University of Zurich, 8057 Zürich, Switzerland
| | - Louis Scheurer
- Institute of Pharmacology and Toxicology, University of Zurich, 8057 Zürich, Switzerland
| | - Michael R. Bösl
- Institute of Experimental Biomedicine I, University Hospital Würzburg, and Rudolf Virchow Center, University of Würzburg, 97080 Würzburg, Germany
| | - Pawel Pelczar
- Center for Transgenic Models, University of Basel, 4001 Basel, Switzerland
| | - Hendrik Wildner
- Institute of Pharmacology and Toxicology, University of Zurich, 8057 Zürich, Switzerland,Corresponding author
| | - Hanns Ulrich Zeilhofer
- Institute of Pharmacology and Toxicology, University of Zurich, 8057 Zürich, Switzerland,Institute of Pharmaceutical Sciences, Swiss Federal Institute of Technology (ETH) Zürich, 8093 Zürich, Switzerland,Center for Neuroscience Zurich (ZNZ), 8057 Zürich, Switzerland,Drug Discovery Network Zurich (DDNZ), 8057 Zürich, Switzerland,Corresponding author
| |
Collapse
|
25
|
Cabañero D, Villalba-Riquelme E, Fernández-Ballester G, Fernández-Carvajal A, Ferrer-Montiel A. ThermoTRP channels in pain sexual dimorphism: new insights for drug intervention. Pharmacol Ther 2022; 240:108297. [PMID: 36202261 DOI: 10.1016/j.pharmthera.2022.108297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 09/25/2022] [Accepted: 09/29/2022] [Indexed: 11/30/2022]
Abstract
Chronic pain is a major burden for the society and remains more prevalent and severe in females. The presence of chronic pain is linked to persistent alterations in the peripheral and the central nervous system. One of the main types of peripheral pain transducers are the transient receptor potential channels (TRP), also known as thermoTRP channels, which intervene in the perception of hot and cold external stimuli. These channels, and especially TRPV1, TRPA1 and TRPM8, have been subjected to profound investigation because of their role as thermosensors and also because of their implication in acute and chronic pain. Surprisingly, their sensitivity to endogenous signaling has been far less studied. Cumulative evidence suggests that the function of these channels may be differently modulated in males and females, in part through sexual hormones, and this could constitute a significant contributor to the sex differences in chronic pain. Here, we review the exciting advances in thermoTRP pharmacology for males and females in two paradigmatic types of chronic pain with a strong peripheral component: chronic migraine and chemotherapy-induced peripheral neuropathy (CIPN). The possibilities of peripheral druggability offered by these channels and the differential exploitation for men and women represent a development opportunity that will lead to a significant increment of the armamentarium of analgesic medicines for personalized chronic pain treatment.
Collapse
Affiliation(s)
- David Cabañero
- Instituto de Investigación, Desarrollo e Innovación en Biotecnología Sanitaria de Elche (IDiBE), Universitas Miguel Hernández, 03202 Elche, Spain
| | - Eva Villalba-Riquelme
- Instituto de Investigación, Desarrollo e Innovación en Biotecnología Sanitaria de Elche (IDiBE), Universitas Miguel Hernández, 03202 Elche, Spain
| | - Gregorio Fernández-Ballester
- Instituto de Investigación, Desarrollo e Innovación en Biotecnología Sanitaria de Elche (IDiBE), Universitas Miguel Hernández, 03202 Elche, Spain
| | - Asia Fernández-Carvajal
- Instituto de Investigación, Desarrollo e Innovación en Biotecnología Sanitaria de Elche (IDiBE), Universitas Miguel Hernández, 03202 Elche, Spain
| | - Antonio Ferrer-Montiel
- Instituto de Investigación, Desarrollo e Innovación en Biotecnología Sanitaria de Elche (IDiBE), Universitas Miguel Hernández, 03202 Elche, Spain.
| |
Collapse
|
26
|
Efficacy of two different methods of cold air analgesia for pain relief in PDT of actinic keratoses of the head region - a randomized controlled comparison study. Photodiagnosis Photodyn Ther 2022; 40:103190. [PMID: 36336323 DOI: 10.1016/j.pdpdt.2022.103190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 10/18/2022] [Accepted: 11/02/2022] [Indexed: 11/05/2022]
Abstract
BACKGROUND Photodynamic therapy (PDT) is an effective method for treating actinic keratosis (AK) with pain during illumination representing the major side effect. The efficacy of two different cooling methods for pain relief in PDT of AK in the head region was compared. METHODS Randomized, assessor-blinded, half side comparison study in 20 patients with symmetrically distributed AK on the head. Conventional PDT was performed on both halves of the scalp or face by applying 20% aminolevulinic acid cream (ALA) and subsequent illumination with incoherent red light. During illumination one side was cooled with a cold air blower (CAB) and the other with a standard fan (FAN) in a randomized fashion. Pain and skin temperature were recorded during and after PDT. The phototoxic skin reaction was evaluated up to seven days after PDT. The clearance rate of AK was assessed at 3 and 6 months after PDT. RESULTS Mean pain (VASmean), maximum pain intensity (VASmax) and the mean skin temperature during PDT were significantly lower with CAB as compared to FAN (VASmean: 2.7 ± 1.4 vs. 3.7 ± 2.1, p = 0.003; VASmax: 3.8 ± 2.0 vs. 4.8 ± 2.5, p = 0.002; 26.8 ± 2.0 °C vs. 32.1 ± 1.7 °C; p=<0.001). The severity of the phototoxic skin reaction and the clearance rate of AK did not differ between the two cooling methods. CONCLUSION Cooling with CAB during PDT has a greater analgesic effect than cooling with FAN. Patients with a lower skin temperature during illumination tended to experience less pain, however, this effect did not reach the level of statistical significance.
Collapse
|
27
|
Virgen CG, Kelkar N, Tran A, Rosa CM, Cruz-Topete D, Amatya S, Cornett EM, Urits I, Viswanath O, Kaye AD. Pharmacological management of cancer pain: Novel therapeutics. Biomed Pharmacother 2022; 156:113871. [DOI: 10.1016/j.biopha.2022.113871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 10/10/2022] [Accepted: 10/13/2022] [Indexed: 12/24/2022] Open
|
28
|
Cheng H, An X. Cold stimuli, hot topic: An updated review on the biological activity of menthol in relation to inflammation. Front Immunol 2022; 13:1023746. [DOI: 10.3389/fimmu.2022.1023746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 10/25/2022] [Indexed: 11/11/2022] Open
Abstract
BackgroundRising incidence of inflammation-related diseases is an increasing concern nowadays. However, while menthol is a wildly-used and efficacious complementary medicine, its pharmacological mechanism still remains uncertain. Superimposed upon that, the aim of this review is to summarize the contemporary evidence of menthol’s anti-inflammatory activity.MethodsUsing the pharmacopeias and electronic databases, including Web of Science, PubMed, and CNKI, this study analyzed the relevant research articles and review articles from 2002 to 2022 and concluded those results and conjectures to finish this article.ResultsThe decrease in pro-inflammatory cytokines and related inflammatory markers, as well as associated pathway activation, was found to play the greatest role in the protective effects of menthol against inflammatory damage or association with protection against chronic inflammation.ConclusionThis review mainly concludes the progress in menthol’s anti-inflammatory activity. Further studies are needed to establish relationships between the mechanisms of action and to clarify the clinical relevance of any anti-inflammatory effects.
Collapse
|
29
|
TRPM8 contributes to sex dimorphism by promoting recovery of normal sensitivity in a mouse model of chronic migraine. Nat Commun 2022; 13:6304. [PMID: 36272975 PMCID: PMC9588003 DOI: 10.1038/s41467-022-33835-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Accepted: 09/30/2022] [Indexed: 12/25/2022] Open
Abstract
TRPA1 and TRPM8 are transient receptor potential channels expressed in trigeminal neurons that are related to pathophysiology in migraine models. Here we use a mouse model of nitroglycerine-induced chronic migraine that displays a sexually dimorphic phenotype, characterized by mechanical hypersensitivity that develops in males and females, and is persistent up to day 20 in female mice, but disappears by day 18 in male mice. TRPA1 is required for development of hypersensitivity in males and females, whereas TRPM8 contributes to the faster recovery from hypersensitivity in males. TRPM8-mediated antinociception effects required the presence of endogenous testosterone in males. Administration of exogenous testosterone to females and orchidectomized males led to recovery from hypersensitivity. Calcium imaging and electrophysiological recordings in in vitro systems confirmed testosterone activity on murine and human TRPM8, independent of androgen receptor expression. Our findings suggest a protective function of TRPM8 in shortening the time frame of hypersensitivity in a mouse model of migraine.
Collapse
|
30
|
Li Z, Zhang H, Wang Y, Li Y, Li Q, Zhang L. The distinctive role of menthol in pain and analgesia: Mechanisms, practices, and advances. Front Mol Neurosci 2022; 15:1006908. [PMID: 36277488 PMCID: PMC9580369 DOI: 10.3389/fnmol.2022.1006908] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Accepted: 09/13/2022] [Indexed: 11/13/2022] Open
Abstract
Menthol is an important flavoring additive that triggers a cooling sensation. Under physiological condition, low to moderate concentrations of menthol activate transient receptor potential cation channel subfamily M member 8 (TRPM8) in the primary nociceptors, such as dorsal root ganglion (DRG) and trigeminal ganglion, generating a cooling sensation, whereas menthol at higher concentration could induce cold allodynia, and cold hyperalgesia mediated by TRPM8 sensitization. In addition, the paradoxical irritating properties of high concentrations of menthol is associated with its activation of transient receptor potential cation channel subfamily A member 1 (TRPA1). Under pathological situation, menthol activates TRPM8 to attenuate mechanical allodynia and thermal hyperalgesia following nerve injury or chemical stimuli. Recent reports have recapitulated the requirement of central group II/III metabotropic glutamate receptors (mGluR) with endogenous κ-opioid signaling pathways for menthol analgesia. Additionally, blockage of sodium channels and calcium influx is a determinant step after menthol exposure, suggesting the possibility of menthol for pain management. In this review, we will also discuss and summarize the advances in menthol-related drugs for pathological pain treatment in clinical trials, especially in neuropathic pain, musculoskeletal pain, cancer pain and postoperative pain, with the aim to find the promising therapeutic candidates for the resolution of pain to better manage patients with pain in clinics.
Collapse
Affiliation(s)
- Ziping Li
- The Graduate School, Tianjin Medical University, Tianjin, China
| | - Haoyue Zhang
- The Graduate School, Tianjin Medical University, Tianjin, China
- Department of Anesthesiology, Tianjin Medical University General Hospital, Tianjin, China
| | - Yigang Wang
- The Graduate School, Tianjin Medical University, Tianjin, China
- Department of Anesthesiology, Tianjin Medical University General Hospital, Tianjin, China
| | - Yize Li
- Department of Anesthesiology, Tianjin Medical University General Hospital, Tianjin, China
| | - Qing Li
- Department of Anesthesiology, Tianjin Medical University General Hospital, Tianjin, China
- Qing Li,
| | - Linlin Zhang
- Department of Anesthesiology, Tianjin Medical University General Hospital, Tianjin, China
- *Correspondence: Linlin Zhang,
| |
Collapse
|
31
|
Wirta DL, Senchyna M, Lewis AE, Evans DG, McLaurin EB, Ousler GW, Hollander DA. A randomized, vehicle-controlled, Phase 2b study of two concentrations of the TRPM8 receptor agonist AR-15512 in the treatment of dry eye disease (COMET-1). Ocul Surf 2022; 26:166-173. [PMID: 35970431 DOI: 10.1016/j.jtos.2022.08.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 08/05/2022] [Accepted: 08/09/2022] [Indexed: 12/14/2022]
Abstract
PURPOSE Dry eye disease (DED) symptoms can negatively impact quality of life (QoL). AR-15512, a transient receptor potential melastatin 8 (TRPM8) agonist, was evaluated as a potential therapy for DED. METHODS In a Phase 2b study, patients with DED were randomized 1:1:1 to 0.0014% AR-15512, 0.003% AR-15512, or vehicle twice daily for 12 weeks. Eligibility criteria included DED signs and symptoms of prespecified severity levels. Outcomes assessed were DED signs (Schirmer score ± anesthetic, ocular surface staining, hyperemia), symptoms (Ocular Discomfort [ODS-VAS], Symptoms Assessment iN Dry Eye [SANDE], Eye Dryness-VAS, Ocular Pain-VAS), QoL-VAS, and adverse events. Co-primary endpoints were changes from baseline in ODS-VAS and anesthetized Schirmer score at Day 28. RESULTS 0.003% AR-15512 (n = 122) was associated with early and sustained improvements in unanesthetized Schirmer score (Days 1 and 14, p < 0.0001), as well as improvements in ocular surface staining (Days 14 and 84, p ≤ 0.0365) and hyperemia (Day 84, p < 0.0215). Statistically significant improvements in symptoms were observed for the 0.003% concentration on SANDE (Days 14, 28, and 84, p ≤ 0.0254), ODS-VAS (Day 84, p = 0.0281), Eye Dryness-VAS (Day 84, p = 0.0302), and multiple QoL measures (Days 14, 28, and 84, p < 0.05). There were no significant differences between active and vehicle groups for the co-primary endpoints. The most common adverse events were burning and stinging upon instillation. CONCLUSIONS Although predefined co-primary study endpoints were not met, AR-15512 demonstrated statistically significant improvements in DED signs, symptoms, and disease-related QoL.
Collapse
|
32
|
Jahanfar F, Sadofsky L, Morice A, D’Amico M. Nebivolol as a Potent TRPM8 Channel Blocker: A Drug-Screening Approach through Automated Patch Clamping and Ligand-Based Virtual Screening. MEMBRANES 2022; 12:954. [PMID: 36295712 PMCID: PMC9609861 DOI: 10.3390/membranes12100954] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 09/19/2022] [Accepted: 09/24/2022] [Indexed: 06/16/2023]
Abstract
Transient Receptor Potential Melastatin 8 (TRPM8) from the melastatin TRP channel subfamily is a non-selective Ca2+-permeable ion channel with multimodal gating which can be activated by low temperatures and cooling compounds, such as menthol and icilin. Different conditions such as neuropathic pain, cancer, overactive bladder syndrome, migraine, and chronic cough have been linked to the TRPM8 mode of action. Despite the several potent natural and synthetic inhibitors of TRPM8 that have been identified, none of them have been approved for clinical use. The aim of this study was to discover novel blocking TRPM8 agents using automated patch clamp electrophysiology combined with a ligand-based virtual screening based on the SwissSimilarity platform. Among the compounds we have tested, nebivolol and carvedilol exhibited the greatest inhibitory effect, with an IC50 of 0.97 ± 0.15 µM and 9.1 ± 0.6 µM, respectively. This study therefore provides possible candidates for future drug repurposing and suggests promising lead compounds for further optimization as inhibitors of the TRPM8 ion channel.
Collapse
Affiliation(s)
- Farhad Jahanfar
- Di.V.A.L. Toscana S.r.l., Via Madonna del Piano 6, 50019 Sesto Fiorentino, Italy
- Department of Medical Biotechnologies, University of Siena, 53100 Siena, Italy
| | - Laura Sadofsky
- Centre for Atherothrombosis and Metabolic Disease, Hull York Medical School, University of Hull, Hull HU6 7RX, UK
| | - Alyn Morice
- Respiratory Research Group, Hull York Medical School, Castle Hill Hospital, Cottingham HU16 5JQ, UK
| | - Massimo D’Amico
- Di.V.A.L. Toscana S.r.l., Via Madonna del Piano 6, 50019 Sesto Fiorentino, Italy
| |
Collapse
|
33
|
Huang SS, Su HH, Chien SY, Chung HY, Luo ST, Chu YT, Wang YH, MacDonald IJ, Lee HH, Chen YH. Activation of peripheral TRPM8 mitigates ischemic stroke by topically applied menthol. J Neuroinflammation 2022; 19:192. [PMID: 35897101 PMCID: PMC9327358 DOI: 10.1186/s12974-022-02553-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Accepted: 07/08/2022] [Indexed: 11/12/2022] Open
Abstract
Background No reports exist as to neuroprotective effects associated with topical activation of transient receptor potential melastatin 8 (TRPM8), a noted cold receptor. In the present study, we identified whether activating peripheral TRPM8 can be an adjuvant therapy for ischemic stroke.
Methods Menthol, an agonist of TRPM8, was applied orally or topically to all paws or back of the mouse after middle cerebral artery occlusion (MCAO). We used Trpm8 gene knockout (Trpm8−/−) mice or TRPM8 antagonist and lidocaine to validate the roles of TRPM8 and peripheral nerve conduction in menthol against ischemic stroke. Results Application of menthol 16% to paw derma attenuated infarct volumes and ameliorated sensorimotor deficits in stroke mice induced by MCAO. The benefits of topically applied menthol were associated with reductions in oxidative stress, neuroinflammation and infiltration of monocytes and macrophages in ischemic brains. Antagonizing TRPM8 or Trpm8 knockout dulls the neuroprotective effects of topically application of menthol against MCAO. Immunohistochemistry analyses revealed significantly higher TRPM8 expression in skin tissue samples obtained from the paws compared with skin from the backs, which was reflected by significantly smaller infarct lesion volumes and better sensorimotor function in mice treated with menthol on the paws compared with the back. Blocking conduction of peripheral nerve in the four paws reversed the neuroprotective effects of topical menthol administrated to paws. On the other hand, oral menthol dosing did not assist with recovery from MCAO in our study. Conclusion Our results suggested that activation of peripheral TRPM8 expressed in the derma tissue of limbs with sufficient concentration of menthol is beneficial to stroke recovery. Topical application of menthol on hands and feet could be a novel and simple-to-use therapeutic strategy for stroke patients. Supplementary Information The online version contains supplementary material available at 10.1186/s12974-022-02553-4.
Collapse
Affiliation(s)
- Shiang-Suo Huang
- Department of Pharmacology, Chung Shan Medical University, Taichung, 40201, Taiwan.,School of Medicine, Institute of Medicine, Chung Shan Medical University, Taichung, 40201, Taiwan.,Department of Pharmacy, Chung Shan Medical University Hospital, Taichung, 40201, Taiwan
| | - Hsing-Hui Su
- Department of Pharmacology, Chung Shan Medical University, Taichung, 40201, Taiwan.,Graduate Institute of Acupuncture Science, China Medical University, Taichung, 40402, Taiwan
| | - Szu-Yu Chien
- Graduate Institute of Acupuncture Science, China Medical University, Taichung, 40402, Taiwan
| | - Hsin-Yi Chung
- Graduate Institute of Acupuncture Science, China Medical University, Taichung, 40402, Taiwan
| | - Sih-Ting Luo
- Graduate Institute of Acupuncture Science, China Medical University, Taichung, 40402, Taiwan
| | - Yu-Ting Chu
- Graduate Institute of Acupuncture Science, China Medical University, Taichung, 40402, Taiwan
| | - Yi-Hsin Wang
- Department of Pharmacology, Chung Shan Medical University, Taichung, 40201, Taiwan
| | - Iona J MacDonald
- Graduate Institute of Acupuncture Science, China Medical University, Taichung, 40402, Taiwan
| | - Hsun-Hua Lee
- Department of Neurology, Shuang Ho Hospital, Taipei Medical University, New Taipei City, 23561, Taiwan. .,Dizziness and Balance Disorder Center, Shuang Ho Hospital, Taipei Medical University, New Taipei City, 23561, Taiwan. .,Department of Neurology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, 11031, Taiwan. .,Department of Neurology, Taipei Medical University Hospital, Taipei Medical University, Taipei, 11031, Taiwan.
| | - Yi-Hung Chen
- Graduate Institute of Acupuncture Science, China Medical University, Taichung, 40402, Taiwan. .,Chinese Medicine Research Center, China Medical University, Taichung, 40402, Taiwan. .,Department of Computer Science and Information Engineering, Asia University, Wufeng, Taichung, 41354, Taiwan.
| |
Collapse
|
34
|
Rosenbaum T, Morales-Lázaro SL, Islas LD. TRP channels: a journey towards a molecular understanding of pain. Nat Rev Neurosci 2022; 23:596-610. [PMID: 35831443 DOI: 10.1038/s41583-022-00611-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/08/2022] [Indexed: 12/18/2022]
Abstract
The perception of nociceptive signals, which are translated into pain, plays a fundamental role in the survival of organisms. Because pain is linked to a negative sensation, animals learn to avoid noxious signals. These signals are detected by receptors, which include some members of the transient receptor potential (TRP) family of ion channels that act as transducers of exogenous and endogenous noxious cues. These proteins have been in the focus of the field of physiology for several years, and much knowledge of how they regulate the function of the cell types and organs where they are expressed has been acquired. The last decade has been especially exciting because the 'resolution revolution' has allowed us to learn the molecular intimacies of TRP channels using cryogenic electron microscopy. These findings, in combination with functional studies, have provided insights into the role played by these channels in the generation and maintenance of pain.
Collapse
Affiliation(s)
- Tamara Rosenbaum
- Departamento de Neurociencia Cognitiva, Instituto de Fisiología Celular, UNAM, Mexico City, Mexico.
| | - Sara L Morales-Lázaro
- Departamento de Neurociencia Cognitiva, Instituto de Fisiología Celular, UNAM, Mexico City, Mexico
| | - León D Islas
- Departamento de Fisiología, Facultad de Medicina, UNAM, Mexico City, Mexico
| |
Collapse
|
35
|
Ślęczkowska M, Almomani R, Marchi M, de Greef BTA, Sopacua M, Hoeijmakers JGJ, Lindsey P, Salvi E, Bönhof GJ, Ziegler D, Malik RA, Waxman SG, Lauria G, Faber CG, Smeets HJM, Gerrits MM. Peripheral Ion Channel Gene Screening in Painful- and Painless-Diabetic Neuropathy. Int J Mol Sci 2022; 23:ijms23137190. [PMID: 35806193 PMCID: PMC9266298 DOI: 10.3390/ijms23137190] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 06/21/2022] [Accepted: 06/23/2022] [Indexed: 02/01/2023] Open
Abstract
Neuropathic pain is common in diabetic peripheral neuropathy (DN), probably caused by pathogenic ion channel gene variants. Therefore, we performed molecular inversion probes-next generation sequencing of 5 transient receptor potential cation channels, 8 potassium channels and 2 calcium-activated chloride channel genes in 222 painful- and 304 painless-DN patients. Twelve painful-DN (5.4%) patients showed potentially pathogenic variants (five nonsense/frameshift, seven missense, one out-of-frame deletion) in ANO3 (n = 3), HCN1 (n = 1), KCNK18 (n = 2), TRPA1 (n = 3), TRPM8 (n = 3) and TRPV4 (n = 1) and fourteen painless-DN patients (4.6%-three nonsense/frameshift, nine missense, one out-of-frame deletion) in ANO1 (n = 1), KCNK18 (n = 3), KCNQ3 (n = 1), TRPA1 (n = 2), TRPM8 (n = 1), TRPV1 (n = 3) and TRPV4 (n = 3). Missense variants were present in both conditions, presumably with loss- or gain-of-functions. KCNK18 nonsense/frameshift variants were found in painless/painful-DN, making a causal role in pain less likely. Surprisingly, premature stop-codons with likely nonsense-mediated RNA-decay were more frequent in painful-DN. Although limited in number, painful-DN patients with ion channel gene variants reported higher maximal pain during the night and day. Moreover, painful-DN patients with TRP variants had abnormal thermal thresholds and more severe pain during the night and day. Our results suggest a role of ion channel gene variants in neuropathic pain, but functional validation is required.
Collapse
Affiliation(s)
- Milena Ślęczkowska
- Department of Toxicogenomics, Maastricht University, 6229 ER Maastricht, The Netherlands; (R.A.); (P.L.); (H.J.M.S.)
- School of Mental Health and Neuroscience, Maastricht University, 6229 ER Maastricht, The Netherlands
- Correspondence:
| | - Rowida Almomani
- Department of Toxicogenomics, Maastricht University, 6229 ER Maastricht, The Netherlands; (R.A.); (P.L.); (H.J.M.S.)
- Department of Neurology, Maastricht University Medical Centre, 6229 HX Maastricht, The Netherlands; (B.T.A.d.G.); (M.S.); (J.G.J.H.); (C.G.F.)
- Department of Medical Laboratory Sciences, Jordan University of Science and Technology, Irbid 22110, Jordan
| | - Margherita Marchi
- Neuroalgology Unit, IRCCS Foundation “Carlo Besta” Neurological Institute, 20133 Milan, Italy; (M.M.); (E.S.); (G.L.)
| | - Bianca T. A. de Greef
- Department of Neurology, Maastricht University Medical Centre, 6229 HX Maastricht, The Netherlands; (B.T.A.d.G.); (M.S.); (J.G.J.H.); (C.G.F.)
| | - Maurice Sopacua
- Department of Neurology, Maastricht University Medical Centre, 6229 HX Maastricht, The Netherlands; (B.T.A.d.G.); (M.S.); (J.G.J.H.); (C.G.F.)
| | - Janneke G. J. Hoeijmakers
- Department of Neurology, Maastricht University Medical Centre, 6229 HX Maastricht, The Netherlands; (B.T.A.d.G.); (M.S.); (J.G.J.H.); (C.G.F.)
| | - Patrick Lindsey
- Department of Toxicogenomics, Maastricht University, 6229 ER Maastricht, The Netherlands; (R.A.); (P.L.); (H.J.M.S.)
| | - Erika Salvi
- Neuroalgology Unit, IRCCS Foundation “Carlo Besta” Neurological Institute, 20133 Milan, Italy; (M.M.); (E.S.); (G.L.)
| | - Gidon J. Bönhof
- Institute for Clinical Diabetology, German Diabetes Center, Leibniz Center for Diabetes Research at Heinrich Heine University Düsseldorf, 40225 Düsseldorf, Germany; (G.J.B.); (D.Z.)
- Department of Endocrinology and Diabetology, Medical Faculty, University Hospital Düsseldorf, Heinrich Heine University Düsseldorf, 40225 Düsseldorf, Germany
| | - Dan Ziegler
- Institute for Clinical Diabetology, German Diabetes Center, Leibniz Center for Diabetes Research at Heinrich Heine University Düsseldorf, 40225 Düsseldorf, Germany; (G.J.B.); (D.Z.)
| | - Rayaz A. Malik
- Division of Cardiovascular Sciences, University of Manchester, Manchester M13 9PL, UK;
- Department of Medicine, Weill Cornell Medicine-Qatar, Doha P.O. Box 24144, Qatar
| | - Stephen G. Waxman
- Department of Neurology and Center for Neuroscience and Regeneration Research, Yale University School of Medicine, New Haven, CT 06510, USA;
- Center for Neuroscience and Regeneration Research, Veterans Affairs Medical Center, West Haven, CT 06516, USA
| | - Giuseppe Lauria
- Neuroalgology Unit, IRCCS Foundation “Carlo Besta” Neurological Institute, 20133 Milan, Italy; (M.M.); (E.S.); (G.L.)
| | - Catharina G. Faber
- Department of Neurology, Maastricht University Medical Centre, 6229 HX Maastricht, The Netherlands; (B.T.A.d.G.); (M.S.); (J.G.J.H.); (C.G.F.)
| | - Hubert J. M. Smeets
- Department of Toxicogenomics, Maastricht University, 6229 ER Maastricht, The Netherlands; (R.A.); (P.L.); (H.J.M.S.)
- School of Mental Health and Neuroscience, Maastricht University, 6229 ER Maastricht, The Netherlands
| | - Monique M. Gerrits
- Department of Clinical Genetics, Maastricht University Medical Centre, 6229 HX Maastricht, The Netherlands;
| |
Collapse
|
36
|
Kurganov E, Okamoto K, Miyata S. Distribution of TRPM8-expressing trigeminal nerve fibers in the pons and medulla oblongata of the mouse brain. J Chem Neuroanat 2022; 122:102104. [PMID: 35561876 DOI: 10.1016/j.jchemneu.2022.102104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 05/05/2022] [Accepted: 05/06/2022] [Indexed: 11/16/2022]
Abstract
Transient receptor potential melastatin 8 (TRPM8), a cold-mediated ion channel, is well known to be expressed in primary sensory neurons; however, limited information is currently available on the distribution of TRPM8-expressing trigeminal nerve fibers in the brainstem. The present study showed the distribution of TRPM8-expressing fibers in the pons and medulla oblongata of the TRPM8 KO mice engineered by knocking in EGFP at the frame of the start codon of TRPM8. In addition, TRPM8-expressing fibers were also observed in the brachium pontis, middle cerebellar peduncle, the sensory root of the trigeminal nerve, and spinal trigeminal tract (sp5). Furthermore, TRPM8-expressing nerve fibers surrounded the somata of HuC/D-positive neurons in the sp5. Moreover, the distribution of TRPM8-expressing fibers from rostral to caudal was visualized in sagittal sections of the mouse brain. The present results also revealed that a high number of TRPM8-expressing fibers colocalized with CTB-labeled fibers in the sp5 following an injection of CTB into the whisker compared to mice's eye and ear. These results show the distribution pathway of TRPM8-expressing fibers in the pons and medulla oblongata and possible involvement in peripheral signaling from the trigeminal nerve.
Collapse
Affiliation(s)
- Erkin Kurganov
- Department of Applied Biology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan.
| | - Kaho Okamoto
- Department of Applied Biology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Seiji Miyata
- Department of Applied Biology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| |
Collapse
|
37
|
Farbu EH, Rypdal M, Skandfer M, Steingrímsdóttir ÓA, Brenn T, Stubhaug A, Nielsen CS, Höper AC. To tolerate weather and to tolerate pain: two sides of the same coin? The Tromsø Study 7. Pain 2022; 163:878-886. [PMID: 34510136 PMCID: PMC9009320 DOI: 10.1097/j.pain.0000000000002437] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 07/08/2021] [Accepted: 07/13/2021] [Indexed: 11/26/2022]
Abstract
ABSTRACT It is a common belief that weather affects pain. Therefore, we hypothesized that weather can affect pain tolerance. This study used data from over 18,000 subjects aged 40 years or older from the general population, who participated in the Tromsø Study 7. They underwent a one-time assessment of cuff algometry pressure pain tolerance (PPT) and cold pain tolerance (CPT), tested with a cold pressor test. The results showed a clear seasonal variation in CPT. The rate of withdrawal in the cold pressor test was up to 75% higher in months in the warmer parts of the year compared with January 2016. There was no seasonal variation in PPT. The study not only found a nonrandom short-term variation in PPT but also indications of such a variation in CPT. The intrinsic timescale of this short-term variation in PPT was 5.1 days (95% % confidence interval 4.0-7.2), which is similar to the observed timescales of meteorological variables. Pressure pain tolerance and CPT correlated with meteorological variables, and these correlations changed over time. Finally, temperature and barometric pressure predicted future values of PPT. These findings suggest that weather has a causal and dynamic effect on pain tolerance, which supports the common belief that weather affects pain.
Collapse
Affiliation(s)
- Erlend Hoftun Farbu
- Department of Community Medicine, UiT The Arctic University of Norway, Tromsø, Norway
| | - Martin Rypdal
- Department of Mathematics and Statistics, UiT The Arctic University of Norway, Tromsø, Norway
| | - Morten Skandfer
- Department of Community Medicine, UiT The Arctic University of Norway, Tromsø, Norway
| | | | - Tormod Brenn
- Department of Community Medicine, UiT The Arctic University of Norway, Tromsø, Norway
| | - Audun Stubhaug
- Department of Pain Management and Research, Oslo University Hospital, Oslo, Norway
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Christopher Sivert Nielsen
- Department of Chronic Diseases and Ageing, Norwegian Institute of Public Health, Oslo, Norway
- Department of Pain Management and Research, Oslo University Hospital, Oslo, Norway
| | - Anje Christina Höper
- Department of Community Medicine, UiT The Arctic University of Norway, Tromsø, Norway
| |
Collapse
|
38
|
Shkodra M, Caraceni A. Treatment of Neuropathic Pain Directly Due to Cancer: An Update. Cancers (Basel) 2022; 14:cancers14081992. [PMID: 35454894 PMCID: PMC9031615 DOI: 10.3390/cancers14081992] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 04/10/2022] [Accepted: 04/12/2022] [Indexed: 02/06/2023] Open
Abstract
Simple Summary This review discusses treatment approaches for providing pain relief to oncological patients affected by pain caused by nerve damage due to the tumor, also known as neuropathic cancer pain. Although being encountered often and causing a relevant burden to these patients, neuropathic cancer pain remains still difficult to diagnose and treat. Strong evidence about the best drugs to be used remain limited, as do therapeutic choices. Abstract Neuropathic pain can be defined as pain related to abnormal somatosensory processing in either the peripheral or central nervous system. In this review article, with neuropathic cancer pain (NCP), we refer to pain due to nervous tissue lesions caused by the tumor or its metastases. Nervous tissue damage is the cause of cancer pain in approximately 40% of those experiencing cancer pain. Recognizing a neuropathic pathophysiology in these cases may be difficult and requires specific criteria that are not homogenously applied in clinical practice. The management of this type of pain can be challenging, requiring the use of specific non-opioid adjuvant drugs. The majority of the criteria for NCP diagnosis and management have been based mainly on results from the noncancer population, risking the failure of addressing the specific needs of this population of patients. In this review, we summarize current management options available for NCP and provide some insights on new promising treatments.
Collapse
Affiliation(s)
- Morena Shkodra
- Palliative Care, Pain Therapy and Rehabilitation Unit, Fondazione IRCCS Istituto Nazionale dei Tumori, 20133 Milano, Italy;
- Institute of Clinical Medicine, University of Oslo, 0318 Oslo, Norway
- Correspondence:
| | - Augusto Caraceni
- Palliative Care, Pain Therapy and Rehabilitation Unit, Fondazione IRCCS Istituto Nazionale dei Tumori, 20133 Milano, Italy;
- Department of Clinical Sciences and Community Health, Università degli Studi di Milano, 20122 Milano, Italy
| |
Collapse
|
39
|
Desforges AD, Hebert CM, Spence AL, Reid B, Dhaibar HA, Cruz-Topete D, Cornett EM, Kaye AD, Urits I, Viswanath O. Treatment and diagnosis of chemotherapy-induced peripheral neuropathy: An update. Biomed Pharmacother 2022; 147:112671. [PMID: 35104697 PMCID: PMC11118018 DOI: 10.1016/j.biopha.2022.112671] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 01/21/2022] [Accepted: 01/25/2022] [Indexed: 01/01/2023] Open
Abstract
When peripheral neuropathy occurs due to chemotherapy treatment, it is referred to as chemotherapy-induced peripheral neuropathy (CIPN). Typically, symptoms are sensory rather than motor and include reduced feeling and heightened sensitivity to pressure, pain, temperature, and touch. The pathophysiology of CIPN is very complex, and it involves multiple mechanisms leading to its development which will be described specifically for each chemotherapeutic class. There are currently no approved or effective agents for CIPN prevention, and Duloxetine is the only medication that is an effective treatment against CIPN. There is an unavoidable necessity to develop preventative and treatment approaches for CIPN due to its detrimental impact on patients' lives. The purpose of this review is to examine CIPN, innovative pharmacological and nonpharmacological therapy and preventive strategies for this illness, and future perspectives for this condition and its therapies.
Collapse
Affiliation(s)
| | | | - Allyson L Spence
- Department of Pharmaceutical Sciences, Regis University School of Pharmacy, Denver, CO 80221, USA.
| | - Bailey Reid
- Regis University School of Pharmacy, Denver, CO 80221, USA.
| | - Hemangini A Dhaibar
- Department of Molecular and Cellular Physiology, LSU Health Shreveport, 1501 Kings Highway, Shreveport, LA 71103, USA.
| | - Diana Cruz-Topete
- Department of Molecular and Cellular Physiology, LSU Health Shreveport, 1501 Kings Highway, Shreveport, LA 71103, USA.
| | - Elyse M Cornett
- Department of Anesthesiology, LSU Health Shreveport, 1501 Kings Highway, Shreveport, LA 71103, USA.
| | - Alan David Kaye
- Departments of Anesthesiology and Pharmacology, Toxicology, and Neurosciences, LSU Health Shreveport, 1501 Kings Highway, Shreveport, LA 71103, USA.
| | - Ivan Urits
- Beth Israel Deaconess Medical Center, Department of Anesthesia, Critical Care, and Pain Medicine, 330 Brookline Ave, Boston, MA 02215, USA.
| | - Omar Viswanath
- Valley Anesthesiology and Pain Consultants - Envision Physician Services, Phoenix, AZ, University of Arizona College of Medicine - Phoenix, Department of Anesthesiology, Phoenix, AZ, Creighton University School of Medicine, Department of Anesthesiology, Omaha, NE, USA.
| |
Collapse
|
40
|
Arendt-Nielsen L, Carstens E, Proctor G, Boucher Y, Clavé P, Albin Nielsen K, Nielsen TA, Reeh PW. The Role of TRP Channels in Nicotinic Provoked Pain and Irritation from the Oral Cavity and Throat: Translating Animal Data to Humans. Nicotine Tob Res 2022; 24:1849-1860. [PMID: 35199839 PMCID: PMC9653082 DOI: 10.1093/ntr/ntac054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 01/19/2022] [Accepted: 02/22/2022] [Indexed: 01/03/2023]
Abstract
Tobacco smoking-related diseases are estimated to kill more than 8 million people/year and most smokers are willing to stop smoking. The pharmacological approach to aid smoking cessation comprises nicotine replacement therapy (NRT) and inhibitors of the nicotinic acetylcholine receptor, which is activated by nicotine. Common side effects of oral NRT products include hiccoughs, gastrointestinal disturbances and, most notably, irritation, burning and pain in the mouth and throat, which are the most common reasons for premature discontinuation of NRT and termination of cessation efforts. Attempts to reduce the unwanted sensory side effects are warranted, and research discovering the most optimal masking procedures is urgently needed. This requires a firm mechanistic understanding of the neurobiology behind the activation of sensory nerves and their receptors by nicotine. The sensory nerves in the oral cavity and throat express the so-called transient receptor potential (TRP) channels, which are responsible for mediating the nicotine-evoked irritation, burning and pain sensations. Targeting the TRP channels is one way to modulate the unwanted sensory side effects. A variety of natural (Generally Recognized As Safe [GRAS]) compounds interact with the TRP channels, thus making them interesting candidates as safe additives to oral NRT products. The present narrative review will discuss (1) current evidence on how nicotine contributes to irritation, burning and pain in the oral cavity and throat, and (2) options to modulate these unwanted side-effects with the purpose of increasing adherence to NRT. Nicotine provokes irritation, burning and pain in the oral cavity and throat. Managing these side effects will ensure better compliance to oral NRT products and hence increase the success of smoking cessation. A specific class of sensory receptors (TRP channels) are involved in mediating nicotine's sensory side effects, making them to potential treatment targets. Many natural (Generally Recognized As Safe [GRAS]) compounds are potentially beneficial modulators of TRP channels.
Collapse
Affiliation(s)
- Lars Arendt-Nielsen
- Corresponding Author: Lars Arendt-Nielsen PhD, Center for Neuroplasticity and Pain (CNAP), SMI, Department of Health Science and Technology, School of Medicine, Aalborg University, Aalborg, Denmark. Telephone: +45 99408831; E-mail:
| | - Earl Carstens
- Neurobiology, Physiology and Behavior, University of California, Davis
| | - Gordon Proctor
- Centre for Host-Microbiome Interactions, Professor of Salivary Biology, King´s CollegeLondon, UK
| | - Yves Boucher
- Laboratory of Orofacial Neurobiology, Paris Diderot University, Paris, France
| | - Pere Clavé
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (Ciberehd), Hospital de Mataró, Universitat Autònoma de Barcelona, Mataró, Barcelona, Spain
| | | | - Thomas A Nielsen
- Mech-Sense & Centre for Pancreatic Diseases, Department of Gastroenterology & Hepatology, Clinical Institute, Aalborg University Hospital, Aalborg, Denmark
| | - Peter W Reeh
- Institute Physiology and Pathophysiology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| |
Collapse
|
41
|
Reeh PW, Fischer MJM. Nobel somatosensations and pain. Pflugers Arch 2022; 474:405-420. [PMID: 35157132 PMCID: PMC8924131 DOI: 10.1007/s00424-022-02667-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 01/17/2022] [Accepted: 01/18/2022] [Indexed: 12/12/2022]
Abstract
The Nobel prices 2021 for Physiology and Medicine have been awarded to David Julius and Ardem Patapoutian "for their discoveries of receptors for temperature and touch", TRPV1 and PIEZO1/2. The present review tells the past history of the capsaicin receptor, covers further selected TRP channels, TRPA1 in particular, and deals with mechanosensitivity in general and mechanical hyperalgesia in particular. Other achievements of the laureates and translational aspects of their work are shortly treated.
Collapse
|
42
|
Iraci N, Ostacolo C, Medina-Peris A, Ciaglia T, Novoselov AM, Altieri A, Cabañero D, Fernandez-Carvajal A, Campiglia P, Gomez-Monterrey I, Bertamino A, Kurkin AV. In Vitro and In Vivo Pharmacological Characterization of a Novel TRPM8 Inhibitor Chemotype Identified by Small-Scale Preclinical Screening. Int J Mol Sci 2022; 23:ijms23042070. [PMID: 35216186 PMCID: PMC8877448 DOI: 10.3390/ijms23042070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 02/04/2022] [Accepted: 02/11/2022] [Indexed: 11/16/2022] Open
Abstract
Transient receptor potential melastatin type 8 (TRPM8) is a target for the treatment of different physio-pathological processes. While TRPM8 antagonists are reported as potential drugs for pain, cancer, and inflammation, to date only a limited number of chemotypes have been investigated and thus a limited number of compounds have reached clinical trials. Hence there is high value in searching for new TRPM8 antagonistic to broaden clues to structure-activity relationships, improve pharmacological properties and explore underlying molecular mechanisms. To address this, the EDASA Scientific in-house molecular library has been screened in silico, leading to identifying twenty-one potentially antagonist compounds of TRPM8. Calcium fluorometric assays were used to validate the in-silico hypothesis and assess compound selectivity. Four compounds were identified as selective TRPM8 antagonists, of which two were dual-acting TRPM8/TRPV1 modulators. The most potent TRPM8 antagonists (BB 0322703 and BB 0322720) underwent molecular modelling studies to highlight key structural features responsible for drug–protein interaction. The two compounds were also investigated by patch-clamp assays, confirming low micromolar potencies. The most potent compound (BB 0322703, IC50 1.25 ± 0.26 μM) was then profiled in vivo in a cold allodinya model, showing pharmacological efficacy at 30 μM dose. The new chemotypes identified showed remarkable pharmacological properties paving the way to further investigations for drug discovery and pharmacological purposes.
Collapse
Affiliation(s)
- Nunzio Iraci
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Ferdinando Stagno d’Alcontres 31, 98166 Messina, Italy;
| | - Carmine Ostacolo
- Department of Pharmacy, University of Naples Federico II, Via D. Montesano 49, 80131 Naples, Italy; (C.O.); (I.G.-M.)
| | - Alicia Medina-Peris
- Instituto de Investigación, Desarrollo e Innovación en Biotecnología Sanitaria de Elche (IDiBE), Universidad Miguel Hernández de Elche, Avenida de la Universidad, 03202 Elche, Spain; (A.M.-P.); (D.C.); (A.F.-C.)
| | - Tania Ciaglia
- Department of Pharmacy, University of Salerno, Via G. Paolo II, 84084 Fisciano, Italy; (T.C.); (P.C.)
| | - Anton M. Novoselov
- Department of Chemistry, Lomonosov Moscow State University, 1/3 Leninsky Gory, 119991 Moscow, Russia; (A.M.N.); (A.A.)
| | - Andrea Altieri
- Department of Chemistry, Lomonosov Moscow State University, 1/3 Leninsky Gory, 119991 Moscow, Russia; (A.M.N.); (A.A.)
- EDASA Scientific srls, Via Stingi 37, 66050 San Salvo, Italy
| | - David Cabañero
- Instituto de Investigación, Desarrollo e Innovación en Biotecnología Sanitaria de Elche (IDiBE), Universidad Miguel Hernández de Elche, Avenida de la Universidad, 03202 Elche, Spain; (A.M.-P.); (D.C.); (A.F.-C.)
| | - Asia Fernandez-Carvajal
- Instituto de Investigación, Desarrollo e Innovación en Biotecnología Sanitaria de Elche (IDiBE), Universidad Miguel Hernández de Elche, Avenida de la Universidad, 03202 Elche, Spain; (A.M.-P.); (D.C.); (A.F.-C.)
| | - Pietro Campiglia
- Department of Pharmacy, University of Salerno, Via G. Paolo II, 84084 Fisciano, Italy; (T.C.); (P.C.)
| | - Isabel Gomez-Monterrey
- Department of Pharmacy, University of Naples Federico II, Via D. Montesano 49, 80131 Naples, Italy; (C.O.); (I.G.-M.)
| | - Alessia Bertamino
- Department of Pharmacy, University of Salerno, Via G. Paolo II, 84084 Fisciano, Italy; (T.C.); (P.C.)
- Correspondence: (A.B.); (A.V.K.)
| | - Alexander V. Kurkin
- Department of Chemistry, Lomonosov Moscow State University, 1/3 Leninsky Gory, 119991 Moscow, Russia; (A.M.N.); (A.A.)
- Correspondence: (A.B.); (A.V.K.)
| |
Collapse
|
43
|
Zhang J, Yao J, Rong M. Editorial: Role of Ion Channels in Pain. Front Pharmacol 2022; 13:884665. [PMID: 35734416 PMCID: PMC9207521 DOI: 10.3389/fphar.2022.884665] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Accepted: 05/09/2022] [Indexed: 11/24/2022] Open
Affiliation(s)
- Jinwei Zhang
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Research Center of Chemical Kinomics, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China
- School of Medicine, Institute of Cardiovascular Diseases, Xiamen Cardiovascular Hospital Xiamen University, Xiamen University, Xiamen, China
- Hatherly Laboratories, College of Medicine and Health, Institute of Biomedical and Clinical Sciences, University of Exeter Medical School, Streatham Campus, Exeter, United Kingdom
- *Correspondence: Jinwei Zhang,
| | - Jing Yao
- State Key Laboratory of Virology, Frontier Science Center for Immunology and Metabolism, Department of Anesthesiology, College of Life Sciences, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan, China
| | - Mingqiang Rong
- The National and Local Joint Engineering Laboratory of Animal Peptide Drug Development, College of Life Sciences, Hunan Normal University, Changsha, China
| |
Collapse
|
44
|
Di Donato M, Ostacolo C, Giovannelli P, Di Sarno V, Monterrey IMG, Campiglia P, Migliaccio A, Bertamino A, Castoria G. Therapeutic potential of TRPM8 antagonists in prostate cancer. Sci Rep 2021; 11:23232. [PMID: 34853378 PMCID: PMC8636514 DOI: 10.1038/s41598-021-02675-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Accepted: 11/22/2021] [Indexed: 12/27/2022] Open
Abstract
Transient receptor potential melastatin-8 (TRPM8) represents an emerging target in prostate cancer, although its mechanism of action remains unclear. Here, we have characterized and investigated the effects of TRPM8 modulators in prostate cancer aggressiveness disclosing the molecular mechanism underlying their biological activity. Patch-clamp and calcium fluorometric assays were used to characterize the synthesized compounds. Androgen-stimulated prostate cancer-derived cells were challenged with the compounds and the DNA synthesis was investigated in a preliminary screening. The most effective compounds were then employed to inhibit the pro-metastatic behavior of in various PC-derived cells, at different degree of malignancy. The effect of the compounds was then assayed in prostate cancer cell-derived 3D model and the molecular targets of selected compounds were lastly identified using transcriptional and non-transcriptional reporter assays. TRPM8 antagonists inhibit the androgen-dependent prostate cancer cell proliferation, migration and invasiveness. They are highly effective in reverting the androgen-induced increase in prostate cancer cell spheroid size. The compounds also revert the proliferation of castrate-resistant prostate cancer cells, provided they express the androgen receptor. In contrast, no effects were recorded in prostate cancer cells devoid of the receptor. Selected antagonists interfere in non-genomic androgen action and abolish the androgen-induced androgen receptor/TRPM8 complex assembly as well as the increase in intracellular calcium levels in prostate cancer cells. Our results shed light in the processes controlling prostate cancer progression and make the transient receptor potential melastatin-8 as a ‘druggable’ target in the androgen receptor-expressing prostate cancers.
Collapse
Affiliation(s)
- Marzia Di Donato
- Department of Precision Medicine, School of Medicine, University of Campania 'L. Vanvitelli', Via L. De Crecchio 7, 80138, Naples, Italy
| | - Carmine Ostacolo
- Department of Pharmacy, University Federico II of Naples, Via D. Montesano 49, 80131, Naples, Italy
| | - Pia Giovannelli
- Department of Precision Medicine, School of Medicine, University of Campania 'L. Vanvitelli', Via L. De Crecchio 7, 80138, Naples, Italy
| | - Veronica Di Sarno
- Department of Pharmacy, University of Salerno, Via G.Paolo II, 84084, Fisciano, SA, Italy
| | - Isabel M Gomez Monterrey
- Department of Pharmacy, University Federico II of Naples, Via D. Montesano 49, 80131, Naples, Italy
| | - Pietro Campiglia
- Department of Pharmacy, University of Salerno, Via G.Paolo II, 84084, Fisciano, SA, Italy
| | - Antimo Migliaccio
- Department of Precision Medicine, School of Medicine, University of Campania 'L. Vanvitelli', Via L. De Crecchio 7, 80138, Naples, Italy
| | - Alessia Bertamino
- Department of Pharmacy, University of Salerno, Via G.Paolo II, 84084, Fisciano, SA, Italy.
| | - Gabriella Castoria
- Department of Precision Medicine, School of Medicine, University of Campania 'L. Vanvitelli', Via L. De Crecchio 7, 80138, Naples, Italy.
| |
Collapse
|
45
|
Bianchini G, Tomassetti M, Lillini S, Sirico A, Bovolenta S, Za L, Liberati C, Novelli R, Aramini A. Discovery of Novel TRPM8 Blockers Suitable for the Treatment of Somatic and Ocular Painful Conditions: A Journey through p Ka and LogD Modulation. J Med Chem 2021; 64:16820-16837. [PMID: 34762442 DOI: 10.1021/acs.jmedchem.1c01647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Transient receptor potential melastatin 8 (TRPM8) is crucially involved in pain modulation and perception, and TRPM8 antagonists have been proposed as potential therapeutic approaches for pain treatment. Previously, we developed two TRPM8 antagonists and proposed them as drug candidates for topical and systemic pain treatment. Here, we describe the design and synthesis of these two TRPM8 antagonists (27 and 45) and the rational approach of modulation/replacement of bioisosteric chemical groups, which allowed us to identify a combination of narrow ranges of pKa and LogD values that were crucial to ultimately optimize their potency and metabolic stability. Following the same approach, we then pursued the development of new TRPM8 antagonists suitable for the topical treatment of ocular painful conditions and identified two new compounds (51 and 59), N-alkoxy amide derivatives, that can permeate across ocular tissue and reduce the behavioral responses induced by the topical ocular menthol challenge in vivo.
Collapse
Affiliation(s)
- Gianluca Bianchini
- Research and Early Development, Dompé Farmaceutici S.p.A., Via Campo di Pile, 67100 L'Aquila, Italy
| | - Mara Tomassetti
- Research and Early Development, Dompé Farmaceutici S.p.A., Via De Amicis 95, 80131 Napoli, Italy
| | - Samuele Lillini
- Research and Early Development, Dompé Farmaceutici S.p.A., Via De Amicis 95, 80131 Napoli, Italy
| | - Anna Sirico
- Research and Early Development, Dompé Farmaceutici S.p.A., Via De Amicis 95, 80131 Napoli, Italy
| | | | - Lorena Za
- Axxam S.p.A, Via Meucci 3, 20091 Bresso, Italy
| | | | - Rubina Novelli
- Research and Early Development, Dompé Farmaceutici S.p.A., Via Santa Lucia 6, 20122 Milano, Italy
| | - Andrea Aramini
- Research and Early Development, Dompé Farmaceutici S.p.A., Via Campo di Pile, 67100 L'Aquila, Italy
| |
Collapse
|
46
|
Xiao S, Yu H, Xie Y, Guo Y, Fan J, Yao W. Evaluation of the analgesic potential and safety of Cinnamomum camphora chvar. Borneol essential oil. Bioengineered 2021; 12:9860-9871. [PMID: 34699310 PMCID: PMC8810075 DOI: 10.1080/21655979.2021.1996149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Cinnamomum camphora chvar. Borneol essential oil (BEO, 18.2% v/v borneol) is a by-product of steam distillation to produce natural crystalline borneol (NCB, 98.4% v/v borneol). Given the known medicinal properties of borneol, the analgesic function and safety were studied. Horn’s method and the Draize test revealed a gender difference in mice regarding acute oral LD50, i.e., low-toxicity to female mice (2749 mg/kg), but practically nontoxic to male mice (5081 mg/kg). There was no acute and skin or eye irritation when BEO was applied directly, if the BEO concentration was less than 50%. The analgesic effect of BEO was evaluated by the glacial acetic acid-induced writhing pain model. Continuous topical application of BEO to the abdomen of mice for 6 d, significantly reduced observed writhing in mice (p < 0.001) with a strong dose-response relationship (r = −0.9006). Concomitantly, the levels of the serum pain-related mediators, prostaglandin E2 (PGE2) and transient receptor potential melastatin-8 (TRPM8) were significantly reduced (p < 0.001), and the latter showed a strong dose-response relationship (r = −0.9427). Therefore, BEO had similar analgesic functions to borneol and was demonstrated to be safe for medicinal use.
Collapse
Affiliation(s)
- Shanshan Xiao
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu Province, China.,School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu Province, China.,Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi, Jiangsu Province, China
| | - Hang Yu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu Province, China.,School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu Province, China.,Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi, Jiangsu Province, China
| | - Yunfei Xie
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu Province, China.,School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu Province, China.,Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi, Jiangsu Province, China
| | - Yahui Guo
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu Province, China.,School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu Province, China.,Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi, Jiangsu Province, China
| | - Jiajia Fan
- Research and Development Department, Chunjingziran Biotechnology Co. Ltd, Shaoxing, Zhejiang Province, China
| | - Weirong Yao
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu Province, China.,School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu Province, China.,Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi, Jiangsu Province, China
| |
Collapse
|
47
|
Olfactory stimulation Inhibits Nociceptive Signal Processing at the Input Stage of the Central Trigeminal System. Neuroscience 2021; 479:35-47. [PMID: 34695536 DOI: 10.1016/j.neuroscience.2021.10.018] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 10/08/2021] [Accepted: 10/15/2021] [Indexed: 01/06/2023]
Abstract
The spinal trigeminal nucleus caudalis (SpVc) in the mammalian brainstem serves a pivotal function in pain processing. As the main relay center for nociceptive signals, SpVc conducts pain-related signals from various regions of the head toward higher levels of central processing such as the thalamus. SpVc also receives modulatory signals from other brain areas, which can alleviate the perception of headache. We studied the impact of olfactory co-stimulation on pain-related behavior and SpVc neural activity in mice. Using the TRPA1 agonist allyl isothiocyanate (AITC) as noxious stimulus, we quantified the aversive response and the perceived pain intensity by evaluating explorative running and the mouse grimace scale, respectively. We found that the floral odorants phenylethyl alcohol (PEA) and lavender oil mitigated the aversive response to AITC. Consistent with this finding, a newly developed, automated quantification of c-Fos expression in SpVc revealed that co-stimulation with PEA or lavender profoundly reduced network activity in the presence of AITC. These results demonstrated a substantial analgesic potential of odor stimulation in the trigeminal system and provide an explanation for the palliative effect of odors in the treatment of headache.
Collapse
|
48
|
Abstract
Itch is one of the most primal sensations, being both ubiquitous and important for the well-being of animals. For more than a century, a desire to understand how itch is encoded by the nervous system has prompted the advancement of many theories. Within the past 15 years, our understanding of the molecular and neural mechanisms of itch has undergone a major transformation, and this remarkable progress continues today without any sign of abating. Here I describe accumulating evidence that indicates that itch is distinguished from pain through the actions of itch-specific neuropeptides that relay itch information to the spinal cord. According to this model, classical neurotransmitters transmit, inhibit and modulate itch information in a context-, space- and time-dependent manner but do not encode itch specificity. Gastrin-releasing peptide (GRP) is proposed to be a key itch-specific neuropeptide, with spinal neurons expressing GRP receptor (GRPR) functioning as a key part of a convergent circuit for the conveyance of peripheral itch information to the brain.
Collapse
|
49
|
Page P. Making the Case for Modalities: The Need for Critical Thinking in Practice. Int J Sports Phys Ther 2021; 16:28326. [PMID: 34631259 PMCID: PMC8494624 DOI: 10.26603/001c.28326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Accepted: 09/20/2021] [Indexed: 11/18/2022] Open
|
50
|
Menthol-Based Topical Analgesic Induces Similar Upper and Lower Body Pain Pressure Threshold Values: A Randomized Trial. J Sport Rehabil 2021; 31:24-30. [PMID: 34552033 DOI: 10.1123/jsr.2021-0144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 06/23/2021] [Indexed: 11/18/2022]
Abstract
CONTEXT Both health professionals and consumers use menthol-based topical analgesics extensively for the temporary relief of pain from musculoskeletal ailments or injury. However, there are no reports of differences in the pain pressure threshold (PPT) or the relative effectiveness of topical analgesics to reduce pain in the upper and lower body muscles and tendons. The objective of this study was to investigate whether differences existed in PPT and relative pain attenuation associated with a menthol-based topical analgesic over a variety of upper and lower body muscles and tendons. DESIGN Randomized allocation, controlled, intervention study. METHODS Sixteen participants (10 females and 6 males) were tested on their dominant or nondominant side. The order of specific muscle/tendon testing was also randomized, which included upper body (middle deltoid, biceps brachii, and lateral epicondylar tendon) and lower body locations (quadriceps, hamstrings, gastrocnemius, lumbosacral erector spinae muscles, and patellar and Achilles tendons). The PPT was monitored before and 15 minutes following the application of a menthol-based topical analgesic. RESULTS A menthol-based topical analgesic increased PPT (decreased pain sensitivity) overall (P = .05; 11.6% [2.4%]; d = 1.05) and PPT was higher (P < .0001; 31.5%-44.2%; d = 1.03-1.8) for lower versus upper body locations. CONCLUSIONS Health professionals and the public can be assured of similar reductions in pain sensitivity independent of the location of application of a menthol-based topical analgesic.
Collapse
|